Malicious PDF — malware analysis report

Static analysis result for SHA-256 076dfee7164c5c2a…

MALICIOUS

PDF

73.4 KB Created: 2020-11-11 20:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 298e78f63d607ec39dc2b988e937381e SHA-1: 184fd0df302b73592d4172237b98e841c5d6f23e SHA-256: 076dfee7164c5c2a84d3e035c378f0d2429ecf918dfecfe444b7e0a84e9f4b93
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it contains external URIs and a callback phishing lure, suggesting it aims to trick users into contacting a malicious entity. While no scripts were explicitly extracted, the presence of PDF-specific exploits and external URLs points to a likely attack pattern involving user interaction to initiate a malicious process.

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
  • 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://trafffe.ru/aws?utm_term=uscg+achievement+medal+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375209/normal_5f9a268f2e3f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375705/normal_5f8fc9b86f22e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f87d6e3b0ddd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_5f9b8dca8ba5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451545/normal_5fabb55eab893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f9fcdc34312c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379483/normal_5f8d965b4ce9f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c64e85-67ab-4f7a-ba47-6844e64ca878/51838302929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87d1807c-f66a-48f0-807e-5e622ae62098/how_to_uninstall_voicemod_voice_changer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8de21e-d449-4838-a487-690fa16036fd/tizodivajax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/791d5045-b5a5-46e6-bcd5-f99118675b0b/32578034566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19ef6153-f375-4294-8f5e-76147f0e1984/cost_accounting_solution_manual_guerrero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e698bd5d-6bbf-419a-81e6-f5637f1318f5/catering_business_plan_south_afr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f579361-2e87-44ca-9405-e3a2e03f1eb1/96598731424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f5dd9cb-36ee-4d4d-9e36-ab7ced2400b3/certificate_of_non_response.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_off0000df62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF62 5444 bytes
SHA-256: a70effd7a7e6053e86bf35b214fb47c71d339aa353418c8ca437edaf924bf56e
font_01_sfnt_off0000f1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D0 11440 bytes
SHA-256: 3e803b69bef935830aade70b4be8995c10ed4a60123a7627b733182a85679465

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