Malicious PDF — malware analysis report

Static analysis result for SHA-256 e90267274ac8a8c6…

MALICIOUS

PDF

69.0 KB Created: 2020-11-22 20:32:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0800bb784b4ff8d7718daad6320bf1fc SHA-1: d02f25882cb8b8e6fd142890dc2606f8d2558530 SHA-256: e90267274ac8a8c6b7fd2bc9f1b4a4903272fe547971fd0f8aec5214407b06d2
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to 'https://traffmen.ru/123?utm_term=aconsejando+a+una+amiga+answers'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/123?utm_term=aconsejando+a+una+amiga+answers
    • https://sekulawovow.weebly.com/uploads/1/3/4/5/134578441/nilawuzupolep_wuwexodug_muxinawemas.pdf
    • https://gobisenuginofaz.weebly.com/uploads/1/3/4/4/134490447/vodefibiwuxaba.pdf
    • https://jikuvagipotax.weebly.com/uploads/1/3/4/6/134647272/b6ead06b83.pdf
    • https://maduvifodowemo.weebly.com/uploads/1/3/4/6/134692972/jikiriparusal-kadoxiboganim-tebeserevafago.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/941034d9-39fa-47e5-a374-fa672d534d94/59884407559.pdf
    • https://uploads.strikinglycdn.com/files/b648fe7b-54e3-4836-8b3b-b0ecf57a57e5/french_kids_eat_everything.pdf
    • https://s3.amazonaws.com/fajujiju/explorer_scout_uniform_badge_positions.pdf
    • https://s3.amazonaws.com/gupuso/81497854033.pdf
    • https://uploads.strikinglycdn.com/files/aaf873ca-b37c-4604-bec2-a077ea11c5b4/47278937297.pdf
    • https://uploads.strikinglycdn.com/files/eb561c66-e43d-4717-8cbb-6ee7fef60358/la_odisea_de_los_giles_pelicula.pdf
    • https://uploads.strikinglycdn.com/files/50ea8105-0c85-42d3-84d6-013f4bd36b9a/wotuxukojarifozibote.pdf
    • https://uploads.strikinglycdn.com/files/aa99abb0-c098-40a0-920e-912ebed5d45f/kiwelaragobijututogumut.pdf
    • https://uploads.strikinglycdn.com/files/9c5419ae-50a4-4b9b-84af-8e8907b01773/zaboxegabotinujum.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cba5.bin
202b420306a6e807aee6a49304f669990e3a40e0ef14704682593dad2b02b12e
pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA5 5384 bytes
font_01_sfnt_off0000ddf2.bin
2690a9aeb81f9d89f4f1866f0a422d9d9cbf8e38f7682ee4162f71cc9f9334c0
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF2 12204 bytes