Malicious PDF — malware analysis report

Static analysis result for SHA-256 84abd1f9f8743f01…

MALICIOUS

PDF

64.0 KB Created: 2021-04-11 05:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a46225bd07264340f7d53e494dc15156 SHA-1: 74fd33251d106b417166836f6bed65a265af26f0 SHA-256: 84abd1f9f8743f01673bb86816a1541b372006b4cb7bba116bdb9ca0dc1db3c3
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.7399

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://gimoguvi.ru/strik?utm_term=at+the+cross+chords+chris+tomlin PDF link annotation
    • https://bujakisuka.weebly.com/uploads/1/3/2/6/132695398/59e25679b1549.pdfIn PDF document text
    • https://dubelaxelafef.weebly.com/uploads/1/3/1/1/131164372/gaxagotase.pdfIn PDF document text
    • https://zeruposizagaki.weebly.com/uploads/1/3/4/8/134854722/430080.pdfIn PDF document text
    • https://pifujikis.weebly.com/uploads/1/3/4/8/134875168/d96b397b4211c7.pdfIn PDF document text
    • http://wojurimaxab.mywebcommunity.org/why_dont_microwaves_have_a_silent_mode.pdfIn PDF document text
    • https://figidurilope.weebly.com/uploads/1/3/1/4/131452961/8ab7ba67133eb.pdfIn PDF document text
    • https://cdn.sqhk.co/tivomepu/wGxehep/sync_for_icloud_contacts_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476936/normal_5ff9309914fce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449001/normal_60205f4e941bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412387/normal_6000d870b59d9.pdfIn PDF document text
    • https://ginamelemu.weebly.com/uploads/1/3/4/6/134624442/c8693e340.pdfIn PDF document text
    • https://ralunudedosamot.weebly.com/uploads/1/3/4/8/134856058/3500513.pdfIn PDF document text
    • http://keruluzo.medianewsonline.com/administracin_de_personal_y_recursos_humanos_libro.pdfIn PDF document text
    • https://dadomirizetuso.weebly.com/uploads/1/3/4/8/134870225/zejipidozivoxijepali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447631/normal_602270196b92f.pdfIn PDF document text
    • https://mibajajezek.weebly.com/uploads/1/3/4/0/134017497/02fd788.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/3laicLO/kubeziximubidipofebepop.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/4qhiid6/piludo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393349/normal_6012a1042566c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472753/normal_604a489f35e8e.pdfIn PDF document text
    • http://nakekizedexu.getenjoyment.net/baravekesisetoju.pdfIn PDF document text
    • http://ruregere.sportsontheweb.net/ina_bearings_catalog.pdfIn PDF document text
    • https://cdn.sqhk.co/napefabet/95U4yR9/best_cowboy_boots_brand.pdfIn PDF document text
    • https://guxewegitonis.weebly.com/uploads/1/3/4/3/134336720/jojuvojukesage.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuminexozuvino.atwebpages.com/cobra_29_nw_ltd_classic_cb_radio_manual.pdfIn 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_off0000cd93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD93 4744 bytes
SHA-256: 83abd8029a8d0371a724aa528e7a33ff538bf37d8672378b31ca8f9a934e4d2e
font_01_sfnt_off0000dd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD80 10036 bytes
SHA-256: 8db4366e8009a68589a8ba989f2a416f34f683042c86b2df9774c54882dee4d3

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