Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2d919f661c2976…

MALICIOUS

PDF

74.2 KB Created: 2021-01-16 20:53:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 17d32cf0a36b7b32f2d21dd67c2f3bcc SHA-1: 7663b36953d0ede2026c3f46e5c08f0dc88f9bf1 SHA-256: ed2d919f661c2976f1c511ede3d74dde408331e1a3a16ec9871612a38250bd42
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to direct users to potentially malicious websites. One of the primary external URIs, 'https://trafffi.ru/123?utm_term=origami+owl+instructions+easy', is flagged as unknown reputation, increasing suspicion. The ClamAV detection and ML classifier output further support the malicious classification.

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://trafffi.ru/123?utm_term=origami+owl+instructions+easy PDF link annotation
    • https://jixivegeparimes.weebly.com/uploads/1/3/4/7/134749144/5486822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_5fd675af65c2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444877/normal_5fbed322c3374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_5fba9430c609a.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/lazolu/reddit_nfl_fantasy_draft_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/initiating_coverage_report_thomson_one.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/time_dilation_equation_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/td_jakes_soar_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/anti_theft_software_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/65940789548.pdfIn PDF document text
    • https://s3.amazonaws.com/jaburirarov/radilamevovupusasizag.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_off0000e63f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63F 5340 bytes
SHA-256: 01304e62f56a3459df3ef5df67f3af871d1ccdda9243816ce8d62d75bfe06e66
font_01_sfnt_off0000f86a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86A 10556 bytes
SHA-256: 3b42c5b425e22c98387fcdb64a91eb16741066ae80d673246a9b32d51e164b70

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