Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc47ac10743da05…

MALICIOUS

PDF

73.9 KB Created: 2021-03-15 20:08:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: abd023027869ea86b807be8ee46f3631 SHA-1: cc7df9ee4d39e5b71b2972ce02661a3662f6d7fd SHA-256: ccc47ac10743da05f400005d18c64f3d26bf049bff923b42d280317e9fc7df35
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 0.9993

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://crophysi.ru/123?utm_term=prodotto+naturale+anti+formiche PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383689/normal_602e80c94d848.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/dukulidaw.pdfIn PDF document text
    • https://cdn.sqhk.co/rumunefa/TzCbcgh/tugogepekekofutam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402745/normal_6007319354f3a.pdfIn PDF document text
    • https://cdn.sqhk.co/pabopimi/ieBiihg/64287666488.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375887/normal_5feb67a6ea149.pdfIn PDF document text
    • http://viwesisikumebi.getenjoyment.net/zujeloku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413986/normal_60205f395d891.pdfIn PDF document text
    • https://cdn.sqhk.co/jerowerar/mhidCia/beli_pulsa_telkomsel_bayar_nanti.pdfIn PDF document text
    • http://dufigep.scienceontheweb.net/43399702868.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463533/normal_5ffb605817f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369907/normal_601b767cbbebd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422386/normal_6037e0d725c28.pdfIn PDF document text
    • http://vobafoselalulor.mypressonline.com/31320373597.pdfIn PDF document text
    • http://nitiwopororotef.mypressonline.com/how_to_get_mp3_to_itunes_on_iphone_without_computer.pdfIn PDF document text
    • https://cdn.sqhk.co/rokajoten/2ojggi9/vodafone_recharge_apple_pay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476593/normal_5fdc2d5f11912.pdfIn PDF document text
    • https://cdn.sqhk.co/dipasupor/geZhdib/velirosixutigewuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remavuj/google_form_create.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/what_are_the_4_stages_of_team_development.pdfIn PDF document text
    • http://taguloxutenafol.myartsonline.com/93743477678.pdfIn PDF document text
    • http://faxevimisosideg.myartsonline.com/aerobic_biodegradation.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/67568830214.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_off0000e3eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EB 5084 bytes
SHA-256: 2516551aa783cba1147ea94e4ef031906a56a6f069ef223b6b8c86aa8527a248
font_01_sfnt_off0000f50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50E 11004 bytes
SHA-256: 06fe19f10ea12c75ceef86fa81429981725c7c86dae42069ba8a8ca6cfb19ee6

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