Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fa38e76533718ba…

MALICIOUS

PDF

69.5 KB Created: 2020-12-18 14:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ecbf6302d2a7eaf06d7dd3c1fe2e506b SHA-1: 18091728d8674acf1ad7e921909577ab2f4815ab SHA-256: 3fa38e76533718ba9158c1d880ebcfcdeecd9d88c624084ecc6cbbf415b31049
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/strik?utm_term=bass+pro+shops+the+strike+xbox+360 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455901/normal_5fc4b30fbc4ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5fd8352e91c5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388283/normal_5f8dcfadb39fc.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/likadojivivofu/samsung_latest_android_mobile_phones.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/31114956934.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/706262503.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/wunobopuzufevogumaleteko.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/grow_extra_inches_supplement_reviews.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1162b68612547ed5f39f0/t/5fc3c062bc819f1cf44b04d7/1606664291746/sigma_400_bike_computer_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e3a3c89e1c4b8fcb79a6/t/5fc7ea9e86535b530661a9e2/1606937246392/racing_motorcycles_for_sale_south_africa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e15d7d0c8f249d40b1da/t/5fc3f7a2eaf37e3b64170ea5/1606678436295/anime_like_death_note.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/pusajetebatujowukufudi.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/can_t_hurt_me_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/96575789438.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfd4a45ca4f7902665041/1606221130423/73558577991.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_off0000cff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF9 5656 bytes
SHA-256: a84b4c7aed6e7dbd76e8cb2528663bf6bb1cebb5072548d22b42297ddcd7166b
font_01_sfnt_off0000e329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE329 11384 bytes
SHA-256: 4712e866b42f4ce965798040088cbc6c57a72403f8b914ca496d57894d85e1e3

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