Malicious PDF — malware analysis report

Static analysis result for SHA-256 0229c297f2d60af4…

MALICIOUS

PDF

92.5 KB Created: 2021-07-03 21:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: e29d80bac97b9f90133271ae38fd05db SHA-1: 3e1ef7bcab628d5012959d4d5e1c1d269bfb59ab SHA-256: 0229c297f2d60af49d96c6de6d39bc5c4463bdd55e4203f2f6e6089a8bac20fb
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it contains a link farm pointing to compromised CMS uploads and disposable hosting, designed to trick users into downloading further malware. The embedded URLs suggest a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1608f39a27e0f3---zigajulefawomaf.pdf In PDF document text
    • http://seanmore.com/userData/board/file/gatisiribalus.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0394796400---38678609375.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071c072b158d---56983932673.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1606e5a30296b6---97828846048.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/niwozoliwofelexa.pdfIn PDF document text
    • https://lemanssrl.it/file/dunudatusigexufufoxepelos.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/b9ntj4n2gpc44cr85tdhj17vp0/mesakoputamajexigoxiz.pdfIn PDF document text
    • http://aquamedia.cn/ckfinder/userfiles/files/xakirir.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/ea459f7945ad5ae40a645b21fdd82cfd/papitofegufazapolumo.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3e4addf5e---tumos.pdfIn PDF document text
    • http://uceng.net/_UploadFile/Images/file/kuwobokew.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/ec696ca5d0bf831b5464f48ee3fbe0b1/66217087705.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/76ulk0uqfeng609s8oujid1msd/movuxu.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/18689897202.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/hbis0mneck1f49v2iuv1hg25d0/88076683262.pdfIn PDF document text
    • http://urgentcarepb.net/userfiles/file/74125105846.pdfIn PDF document text
    • https://tonitomov.com/picture/file/kerukawunuxegegunubep.pdfIn PDF document text
    • http://webinaris.biz/ckfinder/userfiles/publics/files/5132935303.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609920b35c913---23985427636.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/cf533eff13d0241ba8062aa24d68423e/pafibizirivazege.pdfIn PDF document text
    • http://christopherdallo.com/file/gesuwuvasaxawufesefixa.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1609c219597ba0---meremow.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077842d547a0---45009901459.pdfIn PDF document text
    • https://atl-50.com/files/file/24882720842.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=how+to+change+excel+into+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1A 18580 bytes
SHA-256: 0da9d92f13faf5b1a5129515d009eca2da48e3b3f7a04342c3b18b396a9dd613
font_01_sfnt_off00011dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DD1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000135e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135E8 10812 bytes
SHA-256: 7d0e3f84299e998d09ebb771486555cdddc14a2df42100a5e4ed5b5a4cad6a48
font_03_sfnt_off00014e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E95 16236 bytes
SHA-256: 9f9c9255c0426c77c5b13ef22f4242f4f7095bfd8ba808a20cf1712cd58ffb40

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