Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8e93c9f76ce7de…

MALICIOUS

PDF

77.2 KB Created: 2020-11-20 23:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8fd6db379b9ba1e335009779b056316f SHA-1: 2e354d64c83ce22d8b2de1064965bd9a4ab1cfbd SHA-256: 9b8e93c9f76ce7de6e55265d59874450c1ba74652277526d35b39f1bc8b58646
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/aws?utm_term=fashion+blogger+media+kit+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5fb6ee5842c4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403413/normal_5f98eac8464ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412593/normal_5fb029d7715d2.pdfIn PDF document text
    • https://ziperivowupidu.weebly.com/uploads/1/3/1/3/131381589/4974015.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417128/normal_5fb58a6574230.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373502/normal_5fa31bc2739a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muxegeza/66745125023.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/kofelamibego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e15031fa-9707-4eae-b69c-21f877ace3b8/kujufajutubetepixadob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05e3a4e1-109a-4403-88f4-bbd52f8b07b7/doxebisalibirize.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/rarunakoz.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/pass_the_pigs_scoring_with_pictures.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF59 5532 bytes
SHA-256: f981cd4b9c1508eeebc73bfdbd80326d4fff4bc98ab249cd33307fbe0b8e59c4
font_01_sfnt_off000101f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F8 11184 bytes
SHA-256: 1fa9af6c0293c765f1c9600c066f923eb2ab89026696333fb35d658cbdbe1d9c

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