Malicious PDF — malware analysis report

Static analysis result for SHA-256 867292b4a93a402c…

MALICIOUS

PDF

67.5 KB Created: 2020-11-11 15:14:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ea3b4af867136626748082c7b46909fc SHA-1: 9696445643eb2e586f61ee0353be19060a3965f4 SHA-256: 867292b4a93a402c3c3c1f441212509c15cf8f734e0b3ab3495f71ac666b173c
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?utm_term=apa+format+citing+images+in+reference+page PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f871c644574a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383586/normal_5f9a6cad6bc14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471467/normal_5fa9c80a9f262.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426942/normal_5f9e4e25216eb.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/tezofasaganezasaxosi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404990/normal_5fab9de4573cd.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/da963a9a-f036-4545-9c1f-7471a84bed63/75857315103.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/91405041389.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/download_pokemon_go_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b39394a-aaf7-4c66-a69a-db80647944d3/54453772718.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67674970-852b-4f96-a1c6-2cb1cc412efa/50774497818.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/63638776551.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/zuwonorixezazol.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_off0000cb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4E 5292 bytes
SHA-256: da6f2277b2e030656ed006f483c7dfbc812ff7efd345de2c7e664a248a5034ae
font_01_sfnt_off0000dd43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD43 10480 bytes
SHA-256: a9ed397d29ee9f0ea76ce5b982450cb84d953be7bace3ff14d541b4ee5a6622f