Malicious PDF — malware analysis report

Static analysis result for SHA-256 6396f3dd1c6fe880…

MALICIOUS

PDF

77.3 KB Created: 2021-04-01 01:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c47bf94e4d05c9569f3512efccd69e9 SHA-1: da5b8145d022c959194733c6a671bf3ba94618db SHA-256: 6396f3dd1c6fe880afc584599af4b91b1e439c1ec30d0c97560ad65c83f4bd46
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as malicious, including a link farm and a critical ClamAV detection for a phishing trojan. The embedded URLs suggest a link farm designed to distribute malicious content or phishing pages. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or SEO spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=automotive+flat+rate+manual+pdf
    • https://cdn.sqhk.co/tezofugowura/8Nhg8ja/36727151431.pdf
    • https://novatoful.weebly.com/uploads/1/3/0/9/130969934/gisavelujagu.pdf
    • https://cdn.sqhk.co/kevovevude/jitifhe/runirizakawalaji.pdf
    • https://cdn.sqhk.co/zusisoko/ajfsgdd/king_of_avalon_kvk_tips.pdf
    • https://toxofeleziwogiz.weebly.com/uploads/1/3/1/4/131406173/6f5667df1.pdf
    • https://cdn-cms.f-static.net/uploads/4463526/normal_6032f64b37bc6.pdf
    • https://cdn.sqhk.co/tefozakozup/fzcLjvX/aba_english_learn_english_app_store.pdf
    • https://valodoxajub.weebly.com/uploads/1/3/4/4/134435871/e90e03.pdf
    • https://cdn.sqhk.co/potebuso/gi6XjfU/c_difficile_treatment_nice_guidelines.pdf
    • https://cdn.sqhk.co/gizoxemovefi/QKjfnsS/slack_downloads_not_working.pdf
    • https://cdn.sqhk.co/gijesali/ggijmGt/37018632120.pdf
    • https://pobizaxorede.weebly.com/uploads/1/3/2/6/132696020/sitipugemesige.pdf
    • https://cdn.sqhk.co/givesaxi/uji5xzy/jomitimebudibug.pdf
    • https://gopilabuvimira.weebly.com/uploads/1/3/1/4/131453416/rutexefejozi.pdf
    • https://vigekajabaka.weebly.com/uploads/1/3/4/7/134708837/talenanajamanivetan.pdf
    • https://dagakaxogofawi.weebly.com/uploads/1/3/4/6/134699425/davavugexogexejeri.pdf
    • https://cdn-cms.f-static.net/uploads/4459188/normal_603eab734e0e2.pdf
    • https://tajulariti.weebly.com/uploads/1/3/4/8/134863193/1185458.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bb0d3ded-0d38-400a-b1b7-26d647b017e2/is_it_safe_to_use_oxygen_concentrator.pdf
    • https://uploads.strikinglycdn.com/files/dc28ee4f-d885-4bee-bea6-794550f30bb9/how_to_approach_conflict_resolution_in_a_relationship.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf6.bin
c48a547ec5d9896259cbff5aba8cd97330cc9981bd88d1fbbf71d06a5b108b21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF6 5060 bytes
font_01_sfnt_off0000ff1e.bin
493b65925cdeb1a1c4ec8372ebf4d433eef226220220f51d61fd6c1a95fddf2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1E 11580 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.