Malicious PDF — malware analysis report

Static analysis result for SHA-256 306068bf7ee7332d…

MALICIOUS

PDF

69.5 KB Created: 2021-01-10 17:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 80dc4c849db9bfdd430d2a5aa2e8dcbe SHA-1: b6ce83b4da60205aaaefdf020e9e15d8713a5988 SHA-256: 306068bf7ee7332d59d5017589cb65819cc3dfcc00a978605d8ec26adcaf9f14
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 0.9998

Heuristics 5

  • 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.
  • 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://trafffe.ru/123?utm_term=what+is+a+spatial+distribution+pattern PDF link annotation
    • https://dogamoduxex.weebly.com/uploads/1/3/4/4/134481485/motipovodaxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486772/normal_5ff35362b007f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374196/normal_5faf0ee521964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466679/normal_5fd67b6a7ec84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476152/normal_5fafe204ef831.pdfIn PDF document text
    • https://watubozez.weebly.com/uploads/1/3/5/3/135346011/af99b94e92a0f0.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/kikako.pdfIn PDF document text
    • https://movojedafep.weebly.com/uploads/1/3/0/8/130814843/6111115.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365636/normal_5fce16c727936.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470016/normal_5fcb03ceaee0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404290/normal_5fe89a3dc4a0c.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/mivokozibu/how_to_get_a_angry_magic_bean_sims_4.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/oxigenoterapia_hiperbrica_scielo.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_off0000c810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC810 5080 bytes
SHA-256: 1702918958aa9e64498d8030a74c172cda306c5d90cfe985007c13749219c16d
font_01_sfnt_off0000d94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94A 10024 bytes
SHA-256: be3d60b2c535a57b0b59e810b8bd7f0424781f8a52e5dd63d8c372cd6bff91c2
font_02_sfnt_off0000faf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF9 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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