Malicious PDF — malware analysis report

Static analysis result for SHA-256 5305cc8fd530cda3…

MALICIOUS

PDF

71.9 KB Created: 2020-11-14 10:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7e0da8c232184383e708b131a1974bf1 SHA-1: 53c1ca55419b95204d7707156646f9c7f1aad52c SHA-256: 5305cc8fd530cda3bf2779c9a4305d71127b0164ad3f21196f53dc03d4b0f096
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 0.9997

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://trafficel.ru/strik?utm_term=leaders+eat+last+sparknotes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401697/normal_5f9d1ed73a787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405907/normal_5f91ad4b0a25e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392452/normal_5f9e8b932ecfa.pdfIn PDF document text
    • https://lenusasifelodu.weebly.com/uploads/1/3/4/3/134350773/gonesepabita.pdfIn PDF document text
    • https://taxufizewafodo.weebly.com/uploads/1/3/4/4/134477277/84dbc865.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483346/normal_5fa8e706d4f95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481163/normal_5fa812993a5e2.pdfIn PDF document text
    • https://lokedidige.weebly.com/uploads/1/3/4/3/134315074/2751e81eb29344f.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/168180da-0851-4ae4-a197-a8c2b986a0a8/66981053429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ade6f3d-a79f-4f40-b79b-d42bea66751f/rezerozaxenixubapofejazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3452a775-c542-439f-9fb3-5e55b1ca1e8e/4428777325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5b9b552-342e-4a42-9e36-d133761d4387/parts_of_microscope_and_functions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b12eca77-7102-4612-a171-cb3845e2012e/electric_dreams_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b24b97d7-282a-4b20-8873-da163c4b0597/ashley_furniture_store.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_off0000df15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF15 4956 bytes
SHA-256: 1e4fc724436b6a5b0acd7aec0442bec8017868a4e7422df58390e5a9f29cd345
font_01_sfnt_off0000f002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF002 10272 bytes
SHA-256: 93a6cf28367eec5253048ccd4063bbd029c910007a8f0cc08cb1a004c0f89941