Malicious PDF — malware analysis report

Static analysis result for SHA-256 95083016154f5d85…

MALICIOUS

PDF

73.0 KB Created: 2021-07-23 20:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 461074da4cea740529f3d4a2f4b310f7 SHA-1: 8a22f00082aa122251343809ba8ba621bac22a2d SHA-256: 95083016154f5d855c573418b5932d08255cea5bca6e88103b3ed961f3e85384
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of links, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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 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://bloomland.com/sites/bloomland.com/files/90143054549.pdf In PDF document text
    • https://dailyiat.com/html_upload/file/15209205994.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160755cf8bb95f---farakowe.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/fozaxudefo.pdfIn PDF document text
    • http://prttour.ca/FileData/ckfinder/files/20210710_99B09F4036DE6797.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/95b16970e1d71714b02c601f1a153951/84189943901.pdfIn PDF document text
    • https://inncredel.com/uploads/51633124961.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/7bkg5fn2cbnd6ajlav3nn9rr29/fumefopatijokirunoraja.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/d0f8ac5582726966df0e575bb01807f7/84066538951.pdfIn PDF document text
    • http://roomyab.ir/basefile/roomyabir/files/nisupebutajuzozofaka.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094c0d80d913---91203336611.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/h8e1a2p2q77s556lli804fb2c0/20181249498.pdfIn PDF document text
    • http://studiomuraca.eu/userfiles/files/jopuzetik.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/42276497178.pdfIn PDF document text
    • http://mea-travel.pl/userfiles/file/zezimalubexu.pdfIn PDF document text
    • http://caopump.com/admin/userfiles/file/61614145780.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/b9243d96a3f7e81c6979614de9d5d2df/jimebugesikejufeb.pdfIn PDF document text
    • https://aljazeerahpetroleum.ae/userfiles/files/90646840811.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/526a1632ab74de046916eb4b2d4ed721/79875170361.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e44604b6b2c---87003028870.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608729ea2e368---83351710589.pdfIn PDF document text
    • https://unserbiokorb.ch/userfiles/file/jonepotilagorowawixafu.pdfIn PDF document text
    • https://ottopianos.nl/files/rafabajibub.pdfIn PDF document text
    • http://indel.sk/userfiles/file/rupavekil.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/55ea1c0bbeaed06943131515234820f3/6527289251.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c511fa8c9af---72026369237.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=jasperactive+word+lesson+7+quiz+answersPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC02 15516 bytes
SHA-256: 2dbe3968fa42be192cf0cf5d659401c7f95c11609a0f837dd49e5ed30673adcb
font_01_sfnt_off0000e3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fbe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE7 11004 bytes
SHA-256: ca4795aa17cef4f8c12b778035c8daa5ceae485c346b7d4d9769769a7902edf6