Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1953eb03c946c84…

MALICIOUS

PDF

102.5 KB Created: 2020-11-25 05:02:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 87a08f1a4345c2c763dac3767a8f1ba7 SHA-1: 9324d43197ee3b6c519d879b0475fba7cf8872b5 SHA-256: c1953eb03c946c845d9d6b70f325e263d93e2aee902c6a6d6c4496b8df9a7acf
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, a technique often used in link farms to manipulate search engine rankings or distribute malicious content. The primary URL, 'https://traffset.ru/strik?utm_term=devil+may+cry+hd+collection+trophy+guide', suggests a lure related to a game trophy guide, which is likely a pretext to direct users to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely involving phishing or malware distribution.

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://traffset.ru/strik?utm_term=devil+may+cry+hd+collection+trophy+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415929/normal_5fbb2371ad30c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470035/normal_5fb5a4214ad84.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/fisit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469370/normal_5fa5f61dde6c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_5fb02b9bd5754.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/funafiwuxijawur.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/zalomi/56171346710.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/designation_in_admission_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45a690f6-0c3d-4f5e-9dd2-3a2d42641a7c/words_start_with_jeu.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/benighted_noun_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf06b90-2860-49f0-9184-b34defe2c9dd/wivivujifiwonotugum.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_off00015483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15483 5468 bytes
SHA-256: 46e035965d7cee0c9a6c35dadf7483a7d0a4659abbb78999e883e96cf26169f6
font_01_sfnt_off00016707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16707 11100 bytes
SHA-256: 0cbbcf536ab572a810393c031f971391dafcba918a33f0bfd682536f77eabefc

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