Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfca686ef9011ff…

MALICIOUS

PDF

66.5 KB Created: 2020-12-04 23:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a6183ea71b1aca9f35f8c0afdf5d8253 SHA-1: 18f6cc60c065459df384e05cc19ffd8a50fc30ae SHA-256: 7dfca686ef9011ffd1b37ae51fdaca08691d83ed736e99446d7f867c51f5729d
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to 'trafftec.ru', which is likely part of a phishing campaign impersonating an Etsy gift card template. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for credential harvesting or further exploitation.

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://trafftec.ru/aws?utm_term=etsy+gift+card+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473410/normal_5fbc06ee21ffd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472186/normal_5fc61588bc5fb.pdfIn PDF document text
    • https://pakezumada.weebly.com/uploads/1/3/4/3/134368128/2387339.pdfIn PDF document text
    • https://zuvubexusemeto.weebly.com/uploads/1/3/4/3/134373725/2970522.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/xovajukoxin/vogozonudov.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18272ff13940aa243ecad/t/5fc4880308845d09241ae30a/1606715398525/a_streetcar_named_desire_monologue_stanley.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052834b5-6279-45c8-8a83-e86b0ce3b7c4/intolerancia_hereditaria_a_la_fructosa.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/crystal_reports_8._5_change_sql_query.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5106db7-8d28-488c-8f4d-139acfdc54cc/74687955043.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/64318347645.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/the_fundamentals_of_life_classwork_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/boston_tea_party_worksheet.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_off0000c6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F6 5532 bytes
SHA-256: cfac94f38c5c764a38040db0ab7734e91885d4d7a3aab67d8e4e8d8a8905e768
font_01_sfnt_off0000d9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C4 10600 bytes
SHA-256: 252bfd5f4be0f0f94ce20e46c9e0a80d1483f6786e720a45863d9df83dcbff0c

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