Malicious PDF — malware analysis report

Static analysis result for SHA-256 985f349d7300bdbb…

MALICIOUS

PDF

100.8 KB Created: 2021-03-11 14:12:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f498181036db30fbda9d1bb8c1a0a04c SHA-1: d1700aa3a02ffb5ec27aa1bb8097df72a84e6a9f SHA-256: 985f349d7300bdbbe9b5b9efeb87af674ce0d815bb91c1004ac9fdff18ede4f7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=runescape+3+ranged+guide PDF link annotation
    • http://tafakiduwav.scienceontheweb.net/wenolavavaxujotapine.pdfIn PDF document text
    • http://kebuwakuje.medianewsonline.com/98187593444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418178/normal_602c33eae2a0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450250/normal_5fd102d4ac6eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420468/normal_6016d06719e17.pdfIn PDF document text
    • http://gawudubigojan.getenjoyment.net/navukos.pdfIn PDF document text
    • http://jerimujolegem.medianewsonline.com/pld_high_school_cheer.pdfIn PDF document text
    • http://difavusimope.iblogger.org/91197706518.pdfIn PDF document text
    • http://gizovivomiz.getenjoyment.net/19453380323.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d64d5b41-a66a-4b78-b87f-0feaf8e9cf76.filesusr.com/ugd/cf1aed_aa9fe9cab07c4974b9703283cd4112d8.pdf?index=trueIn PDF document text
    • http://kavibajegis.onlinewebshop.net/el_nombre_de_la_rosa_castellano.pdfIn PDF document text
    • http://gutolagewu.rf.gd/77366027704.pdfIn PDF document text
    • http://rojanesifilagu.myartsonline.com/72244303871.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/fovagejipur.pdfIn PDF document text
    • http://guwaxilajoxeza.onlinewebshop.net/vibekizajok.pdfIn PDF document text
    • https://6c9aa500-f8d9-42a6-b8a4-5b3c562bbfc3.filesusr.com/ugd/543886_ee33ba875d7d4ea7b37fe242333f1052.pdf?index=trueIn PDF document text
    • http://puduvasogedima.rf.gd/87926347065.pdfIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_048aaf3834514389bc689558cc135592.pdf?index=trueIn PDF document text
    • https://ff87c8b5-ca28-4ac0-94ba-218234037d87.filesusr.com/ugd/1d4e4f_837c00fe093347d98f088593cb26ce26.pdf?index=trueIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_b9bd8492b07c40b69da2a8cf697add65.pdf?index=trueIn PDF document text
    • http://mutomipana.rf.gd/52105426111.pdfIn PDF document text
    • https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_f7e7fc695bb14ba9b7d19de34bd006c0.pdf?index=trueIn PDF document text
    • http://jevoneloz.epizy.com/backup_and_reset_apk.pdfIn PDF document text
    • https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_ea5113dafb5d4ef3acd732409dc9d540.pdf?index=trueIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E6E 5380 bytes
SHA-256: 44449eb0e4410f2fc46d62b5fd6e0b638238cae7fb5002e2a8a6502ee8b40da1
font_01_sfnt_off000160ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160CE 10880 bytes
SHA-256: 7f5686cc5f7751e1cc092ee957797dae8689ae9c4fc0a5c07680518566ce084e

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