Malicious PDF — malware analysis report

Static analysis result for SHA-256 a96a067bc820a5ba…

MALICIOUS

PDF

69.7 KB Created: 2020-12-19 19:12:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: e4e50b62453e51de7827144dc980929d SHA-1: a5d37f83ed7627f1e6251b380b7df10154c0b6a5 SHA-256: a96a067bc820a5bacbf6d875fccfd75e7fb2fde41bd42bfe6b9cf1e65a3e521c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified as a link farm, with one prominent URL pointing to a suspicious domain. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the overall structure suggest an attempt to direct users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffset.ru/aws?utm_term=heroic+race+dragon+city+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5fa00039923f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473041/normal_5fabc2087c4ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416131/normal_5fae01e1a6d77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390642/normal_5f97dafeeecdf.pdfIn PDF document text
    • https://kagedevuj.weebly.com/uploads/1/3/4/6/134643161/3285033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5fd915b6ce7db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372696/normal_5fa7101fb2790.pdfIn PDF document text
    • https://gamaditer.weebly.com/uploads/1/3/4/5/134583337/folomufajowifuvifel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408333/normal_5fbb946cec67f.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://static1.squarespace.com/static/5fc3d3f7084698658e709650/t/5fc5669f3c02f22b9dc20635/1606772384634/35066983541.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfdb415687f52b6b7b2913/t/5fc14678f81c9a2a0cd0f90b/1606502009667/wefesawose.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4cbe2a879396864211ed1/t/5fd7352facac596b0cd57364/1607939375473/vefevusotokigewivut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64d6ab8467722f1f88a1e/t/5fc8a41b92e74531f3d0b2ba/1606984732598/shell_vacations_club_paniolo_greens.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_off0000c814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC814 4840 bytes
SHA-256: 300a3762a583c5ecb7976de09add88a31675d55f8b95d216033215d7f82261b8
font_01_sfnt_off0000d891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD891 10300 bytes
SHA-256: f468bb89590c3edd5a685416b4e944f664810e9d4fe8529da7f5af67289aeb6a
font_02_sfnt_off0000fba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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