Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c29f67ecbdd5e1e…

MALICIOUS

PDF

69.9 KB Created: 2021-09-14 12:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 04717bd12725bccc5de1b0ecdfe5cefb SHA-1: e63c5198199e6944c2af05135973c19536bb673a SHA-256: 2c29f67ecbdd5e1e6b363ad8696dee6b0043963a7f17d1e25fe81052c5d775ad
164 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to potentially compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. Heuristics indicate a high likelihood of maliciousness, with ClamAV specifically identifying it as a 'Pdf.Phishing.Trojan'. The presence of a 'download button' lure further supports the phishing and malware delivery intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://annassteen.com/ckfinder/userfiles/files/solezezu.pdf In PDF document text
    • https://f27szerviz.hu/upload/files/gadekuba.pdfIn PDF document text
    • https://www.grdr.org/paidel/ckfinder/userfiles/files/movimovexedolorefawopaj.pdfIn PDF document text
    • https://etest.vn/app/webroot/uploads/files/dawesodijovuluroranati.pdfIn PDF document text
    • http://deeringbayrealestate.com/userfiles/files/82303407522.pdfIn PDF document text
    • http://genbreedpublisher.com/files/upfiles/file/dovibomubukojatawone.pdfIn PDF document text
    • https://norservis.info/files/files/25599681432.pdfIn PDF document text
    • http://crocepadrekolbe.it/userfiles/files/36012744807.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/goluxowutujetofuvinot.pdfIn PDF document text
    • https://costarica4d.com/contents/files/47475186590.pdfIn PDF document text
    • https://yukkumpulgroup1.com/contents/files/sogokararaliruluxet.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16132285e15f59---11406271501.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe06eb1228---13774003731.pdfIn PDF document text
    • https://unique-u.biz/images/uploads/file/numifilakaturuvutop.pdfIn PDF document text
    • http://studiocastigli.eu/userfiles/files/jidas.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/6206e4b75af3e9899abb1be656e6d655/24158156715.pdfIn PDF document text
    • http://dailyliving.nl/ckfinder/userfiles/files/19828025811.pdfIn PDF document text
    • https://happyjourney.webtrails.in/ckfinder/userfiles/files/48832324837.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/xekataxusopevevimunanofil.pdfIn PDF document text
    • http://www.patriarca-batiment.com/ressource/site-image/files/56410858806.pdfIn PDF document text
    • http://urdu-hadith.com/survey/userfiles/files/53455031452.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=rogue+trader+core+rulebook+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000afac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAC 17052 bytes
SHA-256: fdc8d6db2b60628651df1277bcbcaf80c3e28980646476ea9c3e1c0334514a9d
font_01_sfnt_off0000d9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C4 10808 bytes
SHA-256: 7fb2304598e48d221dcfcc6e04d76b06acd91ccb52011a33a0f31e65a7c380ca
font_02_sfnt_off0000f276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF276 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.