Malicious PDF — malware analysis report

Static analysis result for SHA-256 1acbedb48932a9f6…

MALICIOUS

PDF

83.1 KB Created: 2020-12-18 16:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0ea4691f9a7000dfb9a37452ac155cb2 SHA-1: e78352cd69efb3d451598117e4988ab4a7870e84 SHA-256: 1acbedb48932a9f65cf2192d0940e0182865123e38bf9518b8bce2d8f43f8231
164 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'trafficel.ru' suggests a phishing or redirection attempt. The document body, though heavily obfuscated, contains keywords related to 'health and safety manual' and 'pdf india', likely serving as a lure.

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://trafficel.ru/strik?utm_term=health+and+safety+manual+pdf+india PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383699/normal_5fa5a801f23f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466689/normal_5fb5b08dccbf8.pdfIn PDF document text
    • https://gatilavim.weebly.com/uploads/1/3/4/3/134391542/9ba57a6c.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/jijari/danab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/788c6db7-3d2c-4556-98f5-d2ec7915aa6d/38371384066.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/anamorphic_illusions_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/asterisk_the_definitive_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52db9e9f-a520-4d8d-a79b-e4d39e5d7cdf/tewekug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ea2669c-2b87-48cb-99d1-fdf9899382b2/sadavaret.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/3706709681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38348aba-1402-422e-bc9c-dffa0c8c6c0c/37382831684.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/descargar_mapa_metro_barcelona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f4322c8-355d-4cb3-b5d9-29c6ae45f467/88856310410.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_off00010923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10923 5248 bytes
SHA-256: 71c6bef1b76cf91c967d13f763967fb4c6df53c00cfb7aa2a0a29570e88d1f16
font_01_sfnt_off00011ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE0 10624 bytes
SHA-256: af441d086c04d5ebc0bc2d61a87ec7c30fbc22e113e97128d54ae441b0407905

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