Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e4e47c52c28c82b…

MALICIOUS

PDF

115.9 KB Created: 2021-01-14 15:43:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ada93fa6e04ed433d3f436dfa7efe88e SHA-1: 7f057b2d622fbb2e43c7a7a4e4de17741eeca8dd SHA-256: 5e4e47c52c28c82bad1ece8d080b25755afb2dc20d83b97fdca385f57797fc41
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafficel.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to trick users into downloading further malicious content or visiting a compromised site.

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://trafficel.ru/123?utm_term=the+complete+father+brown+collection PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413843/normal_5fba39c8a7370.pdfIn PDF document text
    • https://cdn.sqhk.co/lexewagoz/jb2eTij/best_base_clash_of_clans_town_hall_3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463005/normal_5fef4a4eda136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382643/normal_5fa3535923fee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498986/normal_5ffb810139d32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5f88fb893e677.pdfIn PDF document text
    • https://cdn.sqhk.co/samivegin/hhjBtTu/ark_basic_survival_guide_single_player.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/bugutaj/bafewimagojare.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/rocking_chair_image.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/gazajin.pdfIn PDF document text
    • https://s3.amazonaws.com/soxukowotomaj/jiletugumuja.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/aspera_connect_plugin_chrome.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/volekuduroxotoda.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_off00018c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C02 5260 bytes
SHA-256: ee5b8444d4101c5480a6d37d33bbdce77a754acba188b821a6004944b2f4327d
font_01_sfnt_off00019dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19DC9 10860 bytes
SHA-256: 1e83ae54bfee32fcb89da0e996e20a2a72c5e60d9a8b01c6f58bad14bf2c696a