Malicious PDF — malware analysis report

Static analysis result for SHA-256 600144aab14b8fdd…

MALICIOUS

PDF

72.2 KB Created: 2021-01-03 23:15:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0554c1bbd79bf421ad8457aba1a1699f SHA-1: ba1ad8a26ebc76dd1fbb7b206a9fa887824dfa87 SHA-256: 600144aab14b8fddf1257e8794ca9a1383d28bcf5e4d64120b52dee211f75304
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or malicious content delivery attempt. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains numerous external links, likely to manipulate search engine results or direct users to malicious sites. The embedded URL 'https://trafficel.ru/123?utm_term=mad+max+up+to+the+task+glitch' and the numerous other PDF links point to a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/123?utm_term=mad+max+up+to+the+task+glitch PDF link annotation
    • https://cdn.sqhk.co/golomamone/jgheijc/44447327770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478933/normal_5fc13a867b357.pdfIn PDF document text
    • https://cdn.sqhk.co/wedegetuso/phiWhhq/jupiter_retrograde_2020_dates.pdfIn PDF document text
    • https://lufapaxate.weebly.com/uploads/1/3/0/9/130969762/livik_zufoseximivo_tajivabozivuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459921/normal_5fb7de150dc65.pdfIn PDF document text
    • https://tiluzapibijodok.weebly.com/uploads/1/3/4/2/134265907/b1026cc9.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxugaveg/hamNXe5/wuxibadaxujobipipitokudog.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/senula.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465252/normal_5fb9e37cf0dd2.pdfIn PDF document text
    • https://tamukatiraf.weebly.com/uploads/1/3/4/7/134766395/rakisidavazajufil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382952/normal_5fd27b3d3cb09.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/4960737.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6B 5528 bytes
SHA-256: 58a13e0bb5f57c2874370ec578b9a38574a666a92a79bb91de4597b1b7d45265
font_01_sfnt_off0000ee25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE25 11128 bytes
SHA-256: 91c3c883c6f5c7413e009a5cc6a71355330c9a2954eaa1e2129aefc7afdb46e9

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