Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2f02314aaa326a…

MALICIOUS

PDF

87.0 KB Created: 2021-03-12 13:55:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: eaaa4e2576084e8c296ebc74a0fbc0f7 SHA-1: 0972a08d1b6cce0931c878d5c6f39daec2f10a37 SHA-256: 0d2f02314aaa326ac195282afdb7ab88740db2f63c1551709720ca81fb6bf027
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 0.9998

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://golowaki.ru/123?utm_term=3rd+eye+meditation+guided PDF link annotation
    • https://welirupew.weebly.com/uploads/1/3/4/6/134662060/rinosivi_jedijirokux.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/fu6Figg/jozipusiwekiwez.pdfIn PDF document text
    • http://topcreditcheck.info/manual_de_terapia_cognitivo_conductual_con_nios_y_adolescentesjrpp8.pdfIn PDF document text
    • https://wawokosekipazas.weebly.com/uploads/1/3/1/4/131452886/f593df3edf22.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/javihco/vimozaxujizu.pdfIn PDF document text
    • https://rebavunegiluzu.weebly.com/uploads/1/3/4/4/134497465/kaxigixagewaruz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473963/normal_6013eae535066.pdfIn PDF document text
    • https://fajesafopumusid.weebly.com/uploads/1/3/1/8/131871419/xunubalekoxajeraxup.pdfIn PDF document text
    • https://cdn.sqhk.co/vikimono/hijlMgd/free_live_tv_channels_app_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_6041a69a5acb7.pdfIn PDF document text
    • http://update-win20.online/aashiqui_bangla_video_song0514b.pdfIn PDF document text
    • http://gimakelodikovij.iblogger.org/paper_fortune_teller_template_editable.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/lapuruzomagosetitonugagibrc7s.pdfIn PDF document text
    • https://cdn.sqhk.co/razulati/hdjdAij/sunset_restaurant_diner_brooklyn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458388/normal_601298fa5ad74.pdfIn PDF document text
    • https://gitefitibed.weebly.com/uploads/1/3/5/9/135968717/vuxadop_xetugoxodobiv.pdfIn PDF document text
    • https://vejuxafesopekub.weebly.com/uploads/1/3/6/0/136010302/5124013.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://baruluzibovog.epizy.com/femowikolunozirarawub.pdfIn PDF document text
    • http://wifapejaxim.rf.gd/jagopat.pdfIn 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_off0001190a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1190A 5108 bytes
SHA-256: e5f3c3c92b387a0b12238c4e696889023ea881f33918a240b90b2e03773776bc
font_01_sfnt_off00012a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A5D 10852 bytes
SHA-256: aab0e79ff0e7ae345d40bf953b859593dc31141c4527605b45643e8ea5ffe982

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