Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d3a51f01c8bb89…

MALICIOUS

PDF

78.0 KB Created: 2021-04-21 10:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 33d117c5a29227ac904c3f124bfbfbc3 SHA-1: 32fcbe6f29bcd690d2346891473ddcaeb3aa5d6e SHA-256: d0d3a51f01c8bb899b7b0d9759b8f95b56327cf4f3de6e996346fed810b6b25c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a phishing site disguised as a farm equipment listing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing lure, likely intended to deliver a secondary payload or redirect the user to a malicious site.

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://maypoin.ru/strik?utm_term=john+deere+316+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368989/normal_600e4bb38736c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453730/normal_5fda14b6c1750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454556/normal_60567c8ec4fe4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461791/normal_5fdebd55d845f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476946/normal_601a640c3818a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418783/normal_6061352faf0da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381551/normal_5fe58c33d38e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468551/normal_60033b4c73e87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412887/normal_60638bde77087.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412575/normal_6015a17816e93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413867/normal_602ff72b77985.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481164/normal_606397993fc62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391611/normal_6027483e6abb8.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/13bd566b-8602-4035-bc2a-97c209868b41/9817720236.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/the_greatest_love_of_all_piano_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/657ad8f9-bbaf-438a-bcb1-2cdbe88548e1/woletuxifetufoxivovumap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1785508-3b82-4cc4-9baa-44ec80d43aa7/kulewada.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/use_android_apps_on_windows_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ef82fc-c64a-4cd1-b76d-688979a67a82/chick_fil_a_breakfast_filet_nutrition_facts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/100a6e42-6a3b-472b-9c66-a0a0bc0832ad/83204301057.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_off0000f261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF261 5356 bytes
SHA-256: eee92318f2908366340ec710128a18abec0c78ac9270fba02b155ead6d5328ad
font_01_sfnt_off0001048f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048F 11244 bytes
SHA-256: bab73e73dec36590b67d7eafb3603db1725546699206a9e067c589208f13f65b

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