Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d31fdbdb6d1e63…

MALICIOUS

PDF

60.3 KB Created: 2020-11-30 11:07:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 06872019f6a2a8799de0f94e6993ae87 SHA-1: dba17323e38fef412485be2f61efa65ffbf5f79c SHA-256: d1d31fdbdb6d1e630f0dc5ce7e739a6cef279a41defaea31bd68af20fe60caa4
154 Risk Score

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=laguardia+college+calendar In PDF document text
    • https://malebikixolu.weebly.com/uploads/1/3/4/3/134358595/lixuvulewiwod_bodubidap_jeroxudowamog.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/henghuili-files2/le_gall_brownian_motion_martingales_and_stochastic_calculus.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/mcent_browser_mod_apkpure.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28199bda9c57a97c85960/t/5fc41dc9f8cdb769c664f62f/1606688205395/mount_and_blade_warband_guide_character_creation.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/pokemon_let_s_go_pikachu_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bcfb2e537a05ef083615/t/5fc41d965147b14804b428b7/1606688152722/aveda_blue_oil_uses.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e90c27a199023ab56552/t/5fc3d2652dd96f591863075f/1606668901706/clubbers_guide_to_goa_trance.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/high_price_carl_hart_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29dd524b06a7eb30a4ada/t/5fc45a9cbc819f1cf463e15f/1606703772852/golivuvomevug.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/gigezaridulixarinixobin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dc971c8c741314319700/t/5fc46febe6d49a06bb20cba6/1606709232276/jubodet.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/human_resource_management_snell_bohlander.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_off0000afaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAF 4872 bytes
SHA-256: 33a00be7b14677851f3ef4bffdae42a02081421e46f3c754764c68f9c544f863
font_01_sfnt_off0000c052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC052 10708 bytes
SHA-256: 2bdc22d652d593bf36d4efe797213ac1ddb37f02f97918d661ad98cb485f9d46

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