Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b6e076d98cd71e…

MALICIOUS

PDF

85.0 KB Created: 2021-07-08 05:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1a2c2c3207202f3a8778a76fb321686b SHA-1: 7fdbbc665e49821040c442ba1195b75f0cdfbdf7 SHA-256: e0b6e076d98cd71ea232b23d2d46fde04f59c37bb2c8ae5660319ccd912c2171
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm used for phishing or malware distribution. While no scripts were explicitly extracted, the nature of the links and the PDF format itself often leverage JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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 http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd3c932ff02---93919341724.pdf In PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080fae794772---74259943387.pdfIn PDF document text
    • http://geo-equipe.it/userfiles/files/muwoxudofa.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16093f9dda0235---74039430579.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607e005c667db---gaxivi.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/9a088rbunmgth6j1l5qi0cnma5/metigizu.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/51421257314.pdfIn PDF document text
    • http://nhaphangmy.us/upload/files/24428167532.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2f53b044b---tubuzasij.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608736e1590b9---53833313380.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/6a11e5638df3795c9c3a15a6a0313674/80151548502.pdfIn PDF document text
    • http://annassteen.com/ckfinder/userfiles/files/mufobaxogizij.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/ivora3hh3j6aqu2hmcmvophfb5/vebovap.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/dp9r7pcvamj7ntufdsbcusjmsj/lagadakuvigilekutivataja.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/aufifgna6p4cokdfms8288pl60/98292820087.pdfIn PDF document text
    • http://n2nlah.org/UserFiles/file/janaxinapa.pdfIn PDF document text
    • https://fultoys.com/userfiles/rozovotatotobuxigul.pdfIn PDF document text
    • https://bawwabatrizq.com/userfiles/file/mukodowixekato.pdfIn PDF document text
    • https://autoradiator.mn/uploads/ckfinder/files/rureb.pdfIn PDF document text
    • https://zemtechnika.lt/public/site/0files/semajimizolebukute.pdfIn PDF document text
    • http://nature-revive.org/files/file/51787075055.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=the+meaning+of+designatedPDF 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_off0000e2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E5 19700 bytes
SHA-256: 7c213353e7e2f5a3b71404ab09bdc5690dd8f5128e18e9c13a908035820f560b
font_01_sfnt_off000115db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115DB 10616 bytes
SHA-256: a0354163595642bf962c1c23ca7356c64906b856f4da690084a77c9402fc519e
font_02_sfnt_off00012dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DBC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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