Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2f4ce31ba4090e…

MALICIOUS

PDF

69.2 KB Created: 2020-12-20 00:45:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 60ac810444200b4d3662a0e3fe18ed78 SHA-1: e10cbf3f5fa4273b67f1ce1318e8c850ab068994 SHA-256: 8d2f4ce31ba4090e75dab18036cdf82e78637eba4710e580528579c8fa24533d
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it contains an advance-fee scam lure. The document body, though heavily obfuscated, contains a URL that is likely intended to lead the user to a malicious site. The presence of multiple PDF URLs suggests a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/123?utm_term=best+rappers+right+now+reddit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369631/normal_5fc5c6d2a27b6.pdfIn PDF document text
    • https://javemutamutog.weebly.com/uploads/1/3/4/6/134638327/979d299a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495402/normal_5fc5da9713428.pdfIn PDF document text
    • https://mixodozom.weebly.com/uploads/1/3/4/3/134333910/41287e3a3.pdfIn PDF document text
    • https://tovepeluzon.weebly.com/uploads/1/3/4/3/134385389/5c9ccc2bbc3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375705/normal_5fc3e20445425.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387421/normal_5fa8bc5422c88.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/newopetusam/igf_1_lr3_before_and_after.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/85778035394.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/kikidelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e274b14a-a548-4965-80b8-a2f58e3fe8ba/92059717276.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_off0000d2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DB 5332 bytes
SHA-256: b3cb1f313701c8169efe92bd66e5b2386c9fb587a27ef2301a400e65d6af7186
font_01_sfnt_off0000e509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE509 10260 bytes
SHA-256: 0ccdc257513eb3f1861d73872222ac279ca528963bcb15506331c7be4cdace2f