Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eeb4decf7db02ba…

MALICIOUS

PDF

70.8 KB Created: 2020-11-19 00:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c552994c2995c33e0c5eb74b01baf586 SHA-1: b5dd470f3a478c63e17c29a9eee1c762add6e37c SHA-256: 7eeb4decf7db02bac1f869034aeb71c48d5798b4ae216072583dd53dcd406608
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it is a link farm and uses urgency lures, suggesting a phishing or malicious download attempt. The presence of embedded URLs, including one pointing to 'traffnew.ru', further supports this. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=is+ce+certification+accepted+in+usa PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413375/normal_5f9cce7b15801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415742/normal_5f9e11edf137b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5fa59087c4e7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374976/normal_5fa224d9d672e.pdfIn PDF document text
    • https://kosemarenile.weebly.com/uploads/1/3/4/3/134315061/gozeperetor.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/wotodedaruzuk/lawn_mower_2.0_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/51467750883.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/cell_city_worksheet_answer_key_biology.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/ancient_mesopotamia_crossword_puzzle_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d134def-da8e-4d56-aa46-f167378c6fd5/epson_home_cinema_3700_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/ps2_emulator_apk_download_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab380c6-efc4-414e-a2d5-51093bdfff3d/najoxegagijelujetipotine.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_off0000d960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD960 5052 bytes
SHA-256: c0c422c5a916a39c23780db59413c945b4faf082ae48368a8e25e5dedb14f659
font_01_sfnt_off0000eaa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA0 10320 bytes
SHA-256: 443b47ba5335b13c6fd8d13ac5f1056b9b7df16b28749e9b0b27d95c00e6419e

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