Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d184e3a2a7e6a5c…

MALICIOUS

PDF

67.6 KB Created: 2020-12-15 20:54:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9c1f2c7900808022d704bd04eb1c48ad SHA-1: b959bac9968413d704151a13b4836c711a4b9567 SHA-256: 1d184e3a2a7e6a5cda461c72bcf00d066355b464c8f57432bde171902dcd1ace
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with a primary focus on directing users to 'traffking.ru'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links, likely to distribute malware or conduct phishing. No scripts were extracted, but the presence of external URIs and the link farm heuristic strongly suggest a malicious redirection or download attempt.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffking.ru/strik?utm_term=gre+psychology+percentiles PDF link annotation
    • https://valezofijamope.weebly.com/uploads/1/3/4/4/134445284/3996148.pdfIn PDF document text
    • https://bowulotufevep.weebly.com/uploads/1/3/4/5/134595608/68ce39c3b6.pdfIn PDF document text
    • https://zomafada.weebly.com/uploads/1/3/4/7/134772300/debirapurofuzi-dejofozaj-wubekumizosiz.pdfIn PDF document text
    • https://fitokuzigijot.weebly.com/uploads/1/3/4/6/134681543/a27ee3459a.pdfIn PDF document text
    • https://rujupiben.weebly.com/uploads/1/3/4/8/134852491/3487952.pdfIn PDF document text
    • https://foxevavudutis.weebly.com/uploads/1/3/4/3/134380199/vabifepasegudanesiwo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fcef73ba633b27d3ae59ac9/t/5fd6de54ab77727176a1fe50/1607917141979/calculator_vault_free_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/63258354444.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27e5df7cf8c754034f2c2/t/5fd1efec880fa23343d78720/1607593972006/new_animated_batman_movies_coming_out.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51ca1bd14ff0dd2b7ddca/t/5fc6ff9b4f9413233b161c45/1606877084320/bike_ramp_for_sale.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a0ccd743eb43444a4edf/t/5fcf0242faf0bc04d1c23934/1607402051195/hit_the_roof_speed_gang.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_off0000c919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC919 5120 bytes
SHA-256: dc673e678d97a233c15657186eeada4ed7abcd6bac59055b925ea26b7173147b
font_01_sfnt_off0000da92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA92 11452 bytes
SHA-256: 5dbb5c396193a340a8e8f9eda9bb3b51bbbca1109eaab5c5abd6d84fefa0c56d

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