Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dcd9fbbdd62fe41…

MALICIOUS

PDF

74.4 KB Created: 2020-12-27 04:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6a193b6e0aeb6fcfd543151749bc2d6c SHA-1: 6d4b8124bc2137c8ff3c5df50e69305c08741ba1 SHA-256: 6dcd9fbbdd62fe413e11d632b17bfd7a46bc5bf4ea7f2c507e3b48b75ce92863
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs pointing to disposable hosting and link farms, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags the use of such infrastructure. While the document body is heavily obfuscated, the presence of these links strongly suggests the intent to redirect users to malicious content.

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 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.
  • 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://traffine.ru/123?utm_term=designs+in+machine+embroidery PDF link annotation
    • https://raxeruzuk.weebly.com/uploads/1/3/4/7/134743740/gerujojed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414176/normal_5f95c54315266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_5f8a1eaa86407.pdfIn PDF document text
    • https://rujogapojepon.weebly.com/uploads/1/3/4/5/134597846/8964993.pdfIn PDF document text
    • https://wuxinaruniluxod.weebly.com/uploads/1/3/4/8/134882591/bb5ef.pdfIn PDF document text
    • https://gamevuwi.weebly.com/uploads/1/3/4/5/134525912/2105836.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527345/normal_5fc7dc34c83f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492892/normal_5fccc4643ce51.pdfIn PDF document text
    • https://voteriboxovoviv.weebly.com/uploads/1/3/4/3/134352377/3a017e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488103/normal_5fd7c4ed00cd3.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://s3.amazonaws.com/metubevozisul/81576966075.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/totatefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5476fead-f2bb-43f0-a9d8-71689a08258a/sovodikofilalebojigigo.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_off0000d8ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AC 5268 bytes
SHA-256: 27a4c9cc9fa7423905ce6b5aca229a8a7f122bdb836bb8aa022055702ac656b1
font_01_sfnt_off0000ea55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA55 10524 bytes
SHA-256: e41c6cf39b6edff5f02972a0b694f09666f685a4a1fc0e0bf9eebf78a36204ac
font_02_sfnt_off00010e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E6A 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.