Malicious PDF — malware analysis report

Static analysis result for SHA-256 1064a29289658789…

MALICIOUS

PDF

77.2 KB Created: 2021-02-21 12:54:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 19e5e84cf89d503a0e66efea23bace2f SHA-1: df869ddc3267fdff0168a0adcdfc8fad7abdeddf SHA-256: 1064a292896587890ad543c82a21a2093897ce7ae6d60a8214b24ce507b0f356
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://crophysi.ru/strik?utm_term=dyson+dc41+won%2527t+power+on PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424662/normal_5fcb57b7c0310.pdfIn PDF document text
    • https://dasirexifavud.weebly.com/uploads/1/3/5/3/135320576/jojinajebim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474999/normal_60217b58c7e08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499635/normal_5ff544bd15052.pdfIn PDF document text
    • https://xonadenot.weebly.com/uploads/1/3/4/6/134685596/1926114.pdfIn PDF document text
    • https://roxobirunuj.weebly.com/uploads/1/3/4/0/134096027/7465681.pdfIn PDF document text
    • https://filogeruziwumu.weebly.com/uploads/1/3/1/4/131406947/gogakonav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416514/normal_602371df4388b.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/sojaxub/how_to_pair_jabra_freeway_to_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/26504685576.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/jomokaranaredojoso.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/75681899954.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/dojibijatiji.pdfIn PDF document text
    • http://tirinito.epizy.com/how_to_add_graphics_to_photos_on_iphone.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE425 4932 bytes
SHA-256: b6f8988aa118a5999c8cf7867a5f66adf1c2a6e16cb33af7c0df0343c2b80dbd
font_01_sfnt_off0000f51e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51E 10748 bytes
SHA-256: 656f4c49ad19244a2f135e7de86ab1b085448c75a9b39f34f171c63a1912663d
font_02_sfnt_off000119ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119CE 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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