Malicious PDF — malware analysis report

Static analysis result for SHA-256 41e919bf5ed1e00e…

MALICIOUS

PDF

157.3 KB Created: 2020-12-29 19:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 69458f31d03f6a36dc8a7f636562232a SHA-1: 961999031f30973733dc83581068d9f1442907ac SHA-256: 41e919bf5ed1e00ed941979bcec514dc5c6a5dceb3467b54f07540de92315826
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to historical or political topics, a common tactic in phishing campaigns.

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://trafffe.ru/123?utm_term=conservative+critics+of+the+new+deal+believed+all+of+the+following+except PDF link annotation
    • https://mizemetugez.weebly.com/uploads/1/3/4/3/134322353/6724959.pdfIn PDF document text
    • https://dewosuto.weebly.com/uploads/1/3/1/4/131453399/3318295.pdfIn PDF document text
    • https://zuxosudeti.weebly.com/uploads/1/3/4/3/134359900/numom-betuzeris-jogore-vopuziwe.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/nezebemed.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/e91d9036-a24b-480c-bbf1-cd2647f37efa/kodesuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e674bc00-2947-45a9-bc54-7bda22461505/jezelu.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/98953926170.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/85856589801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/371caa79-865c-4e08-a510-970f7588a8f2/invalid_parameter_number_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c8d7789-5f7f-4946-9ac9-8c8633b7ab1f/dubidakavewuremez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f230f42f-72d9-4cd6-ad46-22266a3d5693/dozufaboweregilegurenus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53ca53ae-a148-41b6-a5a4-a3ace8af6863/gexuxemeduxotedesanodoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ec9b7d-4990-4a15-8a32-99569b5f4678/sagaxiwava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b4175fb-1e54-4de4-a0a2-88ae6742ccce/en_un_turismo_el_mando_que_se_resalt.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_off000229ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x229EF 5680 bytes
SHA-256: a8e747529ec25902bba6e12126b093acbd5ec4f8db81c889b3c41208377c0fc5
font_01_sfnt_off00023d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23D55 12440 bytes
SHA-256: 86e642bf5457d22696e0e7249cc975990a10e852b69a7d00219b61a8b0498aaf

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