Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2133eac7eada9de…

MALICIOUS

PDF

68.4 KB Created: 2021-01-15 04:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 93e3d8b60dcb35b8062c082f4c839949 SHA-1: 67644644995512d0f0c5a2e697d0bd31f5232994 SHA-256: d2133eac7eada9de7a98f32a8787fc55bb171f6a7901ce615461155cab9763b3
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains a large number of external links, suggesting a link farm or redirection scheme to host malicious content. The document body, though heavily obfuscated, contains keywords related to search queries, reinforcing the phishing lure.

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=purolator+oil+filters+where+to+buy PDF link annotation
    • https://cdn.sqhk.co/dezosanag/jbM4gcP/jakubeboperudijafiwe.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/XrgCMps/mavalebawulu.pdfIn PDF document text
    • https://gamevuwi.weebly.com/uploads/1/3/4/5/134525912/gobevazetuve_zirevafifubos_pefavenoj.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/ieWwEgd/kikivelafodupefebowopi.pdfIn PDF document text
    • https://cdn.sqhk.co/ferudati/hdvx9jg/painting_with_a_twist_houston_midtown.pdfIn PDF document text
    • https://pegavuvusejeda.weebly.com/uploads/1/3/1/4/131483027/zawujuvat.pdfIn PDF document text
    • https://cdn.sqhk.co/lewuravasu/fzE7Yhf/ai_dungeon_3rd_person.pdfIn PDF document text
    • https://cdn.sqhk.co/fumazuri/PiiPrii/15017879802.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/jawemepuwiwifisuluf.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/iW1Sghm/ultimate_fall_guys_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lexewagoz/QEgf8kF/cell_expansion_wars_similar_games.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/hfhcifC/sanamejozepokonokoz.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/cU4ieBC/hello_live_chat_app_download.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/povelenavuviw/90038931402.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02E 5188 bytes
SHA-256: f37f0fd6083a88aabf14758e040e5285e065f1548529d4820dc741a040ba2cbb
font_01_sfnt_off0000e1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E2 10160 bytes
SHA-256: 4082bee5fdedbbeefffe0e785065f537d34a23f0acadb24f68e168ba3caf8952

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