Malicious PDF — malware analysis report

Static analysis result for SHA-256 34e0be7da9dcabd5…

MALICIOUS

PDF

78.8 KB Created: 2021-02-19 17:24:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 215cd04c41cd7416fdda04d7c1bff279 SHA-1: b307620ac0e003415529ce3d25f5b445fb86e889 SHA-256: 34e0be7da9dcabd509a73eeb113c3bd222cd63059136a248d70036650b35f9ed
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains a large number of external links, many pointing to other PDFs, suggesting a link farm or redirection mechanism. The primary URL, 'https://bologen.ru/wix?keyword=blender+intro+templates+download', indicates a potential lure related to software templates, likely to deceive users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9169

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://bologen.ru/wix?keyword=blender+intro+templates+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420597/normal_6000bfe3c8761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421336/normal_5fd1c2b89a596.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466173/normal_5ffbbd0470156.pdfIn PDF document text
    • https://jolibudowuw.weebly.com/uploads/1/3/4/5/134596284/pebedepaf.pdfIn PDF document text
    • https://rajuvafawomok.weebly.com/uploads/1/3/4/4/134455823/gixesedegixu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374366/normal_5ffd22379a445.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392453/normal_600430871182b.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/danidoxelarise.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486365/normal_5fe7c8a6c0317.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/saxajavosal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464067/normal_601908fc86f46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369327/normal_5fe5468c3cf95.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/tarajix/36889743845.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/41375366184.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/s_m_l_ring_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/87086042201.pdfIn 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_off0000f772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF772 5036 bytes
SHA-256: 01fe5fbba1cd86800da5b4ed569694685dde8dd26d8a65bd550147513c433a7b
font_01_sfnt_off00010879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10879 10468 bytes
SHA-256: e0fa256dba9dfd9affe27b6070315b89ff7142c5d9ddee35beff0080599e9ebc
font_02_sfnt_off00012c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C53 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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