Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c614b81d95e2574…

MALICIOUS

PDF

72.9 KB Created: 2020-12-30 17:17:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b68f803857145e950306fd41ff57c844 SHA-1: 1904c48ccbc5312f6f1a1c6a2f4d339c2ce5a373 SHA-256: 3c614b81d95e257450124afbc8208c5be537861cd349180acf64dba69163cff7
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to potentially malicious domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to create a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution by directing users to compromised or malicious sites.

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://trafffi.ru/strik?utm_term=cheats+for+gta+5+ps4+car PDF link annotation
    • https://jewuvasoseximu.weebly.com/uploads/1/3/4/3/134355154/6342ea1ee.pdfIn PDF document text
    • https://xizotikozuza.weebly.com/uploads/1/3/4/5/134587863/02f007ee02.pdfIn PDF document text
    • https://ninuwekij.weebly.com/uploads/1/3/4/6/134625354/welarizowalimisedaje.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/hf6haaR/beast_quest_xbox_one_cheats.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/doxifuba/bodmas_no_1_dj_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9112747-2668-4aad-a2f9-d93fe8e1d4c4/dc_comics_cartoon_movies_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75079f70-6b08-4248-84c9-fe9bf2531fcf/acceleration_graph_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/bovawawuwumabejezijudi.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/tabla_dela_alcoholomania.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ea02ab7-7f78-4504-a0d9-f841bc57dc9e/segabobaborekeber.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60b86bec-dd2b-47aa-942f-fa811b1a431d/how_you_call_pakistan_from_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad8c5b2-13d8-4d35-9640-40df2f477c6f/waxatajadasafibuxefi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FD 5116 bytes
SHA-256: c854c5394aa842e311b0e967740d8226d6ca46fb29b221eace56a6a6587a7c5d
font_01_sfnt_off0000e487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE487 11056 bytes
SHA-256: 9204d5aa387285ad4185c243e1b2ec720f10dfacde770d52f386c9dd4ea1a459
font_02_sfnt_off0001089a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1089A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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