Malicious PDF — malware analysis report

Static analysis result for SHA-256 95da5d476d82b8eb…

MALICIOUS

PDF

69.2 KB Created: 2020-12-29 18:49:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ba1f10a08e71ee4756ae66b64e49d0d SHA-1: 927d55d656f10f1afafa8b1eaead915bcd65717c SHA-256: 95da5d476d82b8eb6ffc58a2399230e72a7a983ae1efba18ff2818e1f57c35eb
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains a large number of external links, with the primary malicious URL being https://traffnew.ru/strik?utm_term=legendary+pets+bubble+gum+simulator. The presence of numerous links suggests an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/strik?utm_term=legendary+pets+bubble+gum+simulator
    • https://pavofadibap.weebly.com/uploads/1/3/4/3/134370944/juvikosi.pdf
    • https://pozegitewo.weebly.com/uploads/1/3/4/7/134758724/1684658.pdf
    • https://cdn-cms.f-static.net/uploads/4500887/normal_5fe64cbb3e8d1.pdf
    • https://kuburabet.weebly.com/uploads/1/3/4/3/134362545/ff4606f06.pdf
    • https://vujanakisa.weebly.com/uploads/1/3/4/4/134401771/8736443.pdf
    • https://xutafutixon.weebly.com/uploads/1/3/4/5/134576274/cdbf10f2760b.pdf
    • https://static.s123-cdn-static.com/uploads/4370304/normal_5fc929305aa3b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/143d6075-1df6-4993-9f0a-8b57ddd66c35/macbook_pro_15._4_2015.pdf
    • https://uploads.strikinglycdn.com/files/4d6dbec0-f8a7-4e59-bed0-3fc9809c977c/lugilepumive.pdf
    • https://uploads.strikinglycdn.com/files/4367c1ac-c11e-4320-b843-800c8ea9ca1d/linear_equations_calculator_with_fractions.pdf
    • https://uploads.strikinglycdn.com/files/9414eeca-dfb8-444e-ad52-d26794b4ba6a/battle_warship_naval_empire_gift_codes_2019.pdf
    • https://uploads.strikinglycdn.com/files/a7e2ca9f-d755-4798-a8d9-3f776e8d4882/xatiwaga.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0f3.bin
9c26a0f231e117a22678abc226a25fb4e197ad0761b20b554d6e97a56156a776
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F3 5464 bytes
font_01_sfnt_off0000e376.bin
30d247fd158a0275e1309b9761f6f87155f5c1765f6ec04ac7cb241e5e4da7dc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE376 10616 bytes