Malicious PDF — malware analysis report

Static analysis result for SHA-256 72cce923180ae6c1…

MALICIOUS

PDF

73.0 KB Created: 2020-11-20 10:32:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da1c28864cf1b765b11bdfe9d3f96a3a SHA-1: 13a0d30d387fe9d467f64c9e3c129a72c6458379 SHA-256: 72cce923180ae6c135e040365b29afc9f34b11cc6883e5ad5b5e630555dbb94a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, characteristic of a link farm designed for SEO manipulation. The primary URL, 'https://traffine.ru/123?utm_term=download+gba+emulator+apk+pro', suggests a lure to download software. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/123?utm_term=download+gba+emulator+apk+pro
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/filem.pdf
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5fa2f5ab7f439.pdf
    • https://nimopiwezu.weebly.com/uploads/1/3/4/7/134700470/fobuxu_wumabesew.pdf
    • https://fesitafixob.weebly.com/uploads/1/3/4/6/134653549/ladesavojixi.pdf
    • https://cdn-cms.f-static.net/uploads/4369501/normal_5f9cf0f81ae0e.pdf
    • https://cdn-cms.f-static.net/uploads/4453579/normal_5fa3d9a280374.pdf
    • https://cdn-cms.f-static.net/uploads/4409255/normal_5f9b9bb4c2667.pdf
    • https://metumarexidema.weebly.com/uploads/1/3/4/5/134591821/sarijawavap.pdf
    • https://cdn-cms.f-static.net/uploads/4447434/normal_5fa29d54c0b87.pdf
    • https://gotumofavi.weebly.com/uploads/1/3/4/6/134602885/jezerat.pdf
    • https://cdn-cms.f-static.net/uploads/4464297/normal_5fa5681fc03dc.pdf
    • https://cdn-cms.f-static.net/uploads/4469350/normal_5fa3378f43026.pdf
    • https://xatomurukazaj.weebly.com/uploads/1/3/4/3/134378662/1533aa7c8171be5.pdf
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/dcedadf33.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/vukusa/contemporary_developments_in_science_and_technology.pdf
    • https://uploads.strikinglycdn.com/files/299f7c45-52bf-4755-aa1f-2add40b92edd/77861190542.pdf
    • https://uploads.strikinglycdn.com/files/e4fa49a2-37f9-41d9-ade6-bd2e5d93c154/320767690.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d216.bin
291d3afc6fbed1723b12801c7c20c29a6b7de98864a90bb6d803e5195818d2d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD216 5232 bytes
font_01_sfnt_off0000e3db.bin
eef4cf91fc0dffc18c0caaaba3aa4c4ec2d7f83462b9dd5eac745d6a2e95938f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DB 10888 bytes
font_02_sfnt_off000108f7.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108F7 4324 bytes

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