Malicious PDF — malware analysis report

Static analysis result for SHA-256 088e39c93bdc8019…

MALICIOUS

PDF

69.8 KB Created: 2021-01-08 04:56:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5558c2732a1c79581ccaa945e0eba8bb SHA-1: b5d085b9297d02ad0e9849e56d55d924cfe51c3c SHA-256: 088e39c93bdc8019e496e956b292740815549655d8daf63c0f415278ce6bc73e
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam, where the document prompts the user to call a phone number. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics point towards a malicious document designed to deceive users into initiating contact with the attacker. The file likely exploits a PDF vulnerability to deliver its payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/123?utm_term=de+2501+form+sample
    • https://cdn.sqhk.co/fekawifen/ihd2sRD/21138100023.pdf
    • https://cdn.sqhk.co/zudilubal/LqWgfzo/dosudizewizurixutozar.pdf
    • https://cdn-cms.f-static.net/uploads/4457279/normal_5fd64579c95fd.pdf
    • https://nelibijejukeli.weebly.com/uploads/1/3/1/4/131437261/tasopaxora-litonagupuzona.pdf
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5f8aef32791ad.pdf
    • https://cdn-cms.f-static.net/uploads/4453102/normal_5fdb024e3d424.pdf
    • https://static.s123-cdn-static.com/uploads/4493905/normal_5ff40a011d787.pdf
    • https://cdn.sqhk.co/bebetirifam/b8E4jf5/metta_world_peace_documentary.pdf
    • https://gapeduruje.weebly.com/uploads/1/3/2/6/132681343/roxubotesi.pdf
    • https://cdn.sqhk.co/vagewovupug/njfjjIT/dining_table_legs_lowes.pdf
    • https://static.s123-cdn-static.com/uploads/4420028/normal_5fe1a92dd07e9.pdf
    • https://cdn-cms.f-static.net/uploads/4478422/normal_5fb59cb96da2b.pdf
    • https://cdn.sqhk.co/kikutajaz/ifWhhNN/ravejipifilup.pdf
    • https://cdn-cms.f-static.net/uploads/4415081/normal_5fbbd6d89357f.pdf
    • https://cdn-cms.f-static.net/uploads/4456116/normal_5fdc129f7d616.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gorajikunobixi/dwg_trueview_2019_free_64_bit.pdf
    • https://s3.amazonaws.com/wewuxuviwar/unfreeze_my_equifax_credit_report.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_off0000d3de.bin
62fa004b9504b679dfa161ff943615fc997650104bedf312ffe93a72827b7b8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DE 5496 bytes
font_01_sfnt_off0000e68a.bin
20b41ab83d0280aabce2a6a7e89d936f370372d664cdaf73248c65e2e73b2b62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE68A 10532 bytes

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