Malicious PDF — malware analysis report

Static analysis result for SHA-256 84a1453b52041dec…

MALICIOUS

PDF

64.8 KB Created: 2020-12-26 15:35:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 0b353c5773792ad758bc1e3e301a2b7d SHA-1: 31202925f7210dc0d52b26df4fdc5fa9ce55669a SHA-256: 84a1453b52041dec22cccdfc2f5b4b252ccbb60ba189403be74d77760a6c68b8
96 Risk Score

Malware Insights

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

The PDF file contains a URL that directs users to a site related to a soccer tournament, likely as a lure. ClamAV and ML classifiers identified this PDF as malicious, specifically a phishing trojan. The embedded URL is the primary indicator of malicious intent, suggesting a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://trafficel.ru/strik?utm_term=rumble+on+the+river+2020+soccer+tournament PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370540/normal_5fdc81cecefcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5f9245dc9f9bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5fb25638d8b70.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/hieihgp/sirinokodozagezadurefum.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/gew0E1N/build_a_bear_locations_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445866/normal_5fd666730e67a.pdfIn PDF document text
    • https://pawapuso.weebly.com/uploads/1/3/4/3/134312868/a9f84c97585.pdfIn PDF document text
    • https://cdn.sqhk.co/baxemazisod/gfh7SqQ/sonny_with_a_chance_zora_s_crush_episode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/da824bf5-81c4-4d23-9cab-4cd82a128061/70317920829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ba4838-07f8-4bfd-ac57-c5596f2d5322/57442249674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8af3b57-24c1-4f96-bdd2-e12759dfa5cc/34641546350.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3CE 5404 bytes
SHA-256: cad2151c6902a25ea27ae0b5fa0487beb2bf560e073709005c0c36e772de1439
font_01_sfnt_off0000c5fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5FB 10056 bytes
SHA-256: 183dae6fbf7cb2997a0a1ed2c2da91424d99ebfcdec9c65632489f3023e48658
font_02_sfnt_off0000e89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2