Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1d2cf549ef4b082…

MALICIOUS

PDF

73.7 KB Created: 2021-03-25 17:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0ebc6f9867ddcf9a7b2eeb3dc35b2426 SHA-1: 12d1c43ae5ec9e531ec9a5fec4e6b4d6605c4ef1 SHA-256: f1d2cf549ef4b082d1adf57b13c8ff04498491f85049890a91fb350f150449ed
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=manual+openoffice+calc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415935/normal_600ea444e9f40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383699/normal_5fd61fcc6dd3f.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/r7jg9jf/96535006915.pdfIn PDF document text
    • http://wogivodugakovek.mygamesonline.org/aabb_technical_manual_20th_edition_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/iiciaj1/dateline_detective_story_ending.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/lonely_lovers_line_dance.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419413/normal_5fff4df2515e5.pdfIn PDF document text
    • http://womizepivilora.sportsontheweb.net/52188142568.pdfIn PDF document text
    • https://cdn.sqhk.co/sanozusu/VdwhIBr/nojemimubexegovamamomom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450158/normal_5fe9a982db452.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/L3hjYMz/strike_real_money_bowling_apk.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/xurixado/91401923308.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/canon_5d4_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72a6b025-28df-4c42-8654-a9b0f2ee8b20/plot_of_the_5th_wave_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0842d9e0-c04c-4bd5-a3dc-a629dc12b64d/64719241413.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/jopegepov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b585bd0-3925-4be6-9607-8eaf67ab8ffe/kulafukarurev.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/16033206322.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/116365846.pdfIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/82028505654.pdfIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/malerasulaxumovugogomusak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc611d78-69b0-4a88-91ab-8e33307dd006/telavak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa43175-89d3-4aff-b5d0-5c6af3214645/juegos_de_cinema_2_players.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_off0000e464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE464 4740 bytes
SHA-256: 28cab0c278f66299aa9603306f814e1e3bca3ffc33ff8b9f3604097308c95bea
font_01_sfnt_off0000f4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AC 10936 bytes
SHA-256: a264bfdbd9311180555300eac89c6d972d85a0271a607939616019634127c4e2

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