Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c27cd31248acb3…

MALICIOUS

PDF

79.0 KB Created: 2021-03-22 08:57:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 425ceca218cbce934a99ff2e63b35078 SHA-1: 1beb8cf1c6979ff737ce21c5a8aaf0b59690bdc0 SHA-256: 60c27cd31248acb30edfb94c0926f0a7c40daf06ef8a52dc30c1423acd6eb34c
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 0.9995

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://leonvi.ru/strik?utm_term=corsair+k95+platinum PDF link annotation
    • http://piwofoterif.sportsontheweb.net/nejikijit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_5fe718cf0c954.pdfIn PDF document text
    • http://gezetola.scienceontheweb.net/27449423059.pdfIn PDF document text
    • https://bamususifilozok.weebly.com/uploads/1/3/1/3/131383301/1429786e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480148/normal_5fde35931e4c6.pdfIn PDF document text
    • http://vifezitenof.getenjoyment.net/how_many_red_10_cards_are_in_a_deck_of_cards.pdfIn PDF document text
    • http://fevofawemuwa.medianewsonline.com/44421952887.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416149/normal_6049e901267ba.pdfIn PDF document text
    • http://pazadixokumox.sportsontheweb.net/bisivaretiwigaxelapa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427809/normal_5fcacdad02d2c.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/56109232343.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469358/normal_5ff3fcceb7dcd.pdfIn PDF document text
    • https://tatogupuragafa.weebly.com/uploads/1/3/4/0/134096405/welafoniruzovex.pdfIn PDF document text
    • https://wagigezo.weebly.com/uploads/1/3/0/7/130775958/zesizomigofipo.pdfIn PDF document text
    • https://nifisutabunus.weebly.com/uploads/1/3/4/6/134634245/xafawuluxezokaxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494888/normal_601b8fd72a88e.pdfIn PDF document text
    • http://bitoxifa.sportsontheweb.net/19209952677.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/medicine_buddha_mantra.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506170/normal_6053c3e75e32d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://e5720c39-3c1c-4a52-9be9-509675281b5a.filesusr.com/ugd/0010c8_76270186d98548bdb46d80413d9aee5c.pdf?index=trueIn PDF document text
    • https://f4a80ce2-0a24-44e2-aff7-13c87a434ee9.filesusr.com/ugd/ace063_f042ac4e299f47fe871a301c9cbefb59.pdf?index=trueIn PDF document text
    • http://zagofij.onlinewebshop.net/can_you_make_whiskey_in_a_reflux_still.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE910 5096 bytes
SHA-256: bc73a9b48b38184f0bf1a3a3b671f981541a7dfcc2335e223167733a7f0bbf14
font_01_sfnt_off0000fa41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA41 11284 bytes
SHA-256: 4be0189550d8da7b31bbf7120722b037a8cd56665718621cc3ce846d910c7237
font_02_sfnt_off00012053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12053 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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