Malicious PDF — malware analysis report

Static analysis result for SHA-256 0218a7ca233d9243…

MALICIOUS

PDF

60.7 KB Created: 2020-12-03 04:43:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: a2816a0eb82e92d1b7eca4025bd19c87 SHA-1: 5ea74458af0f52f8cf3aa9a5213b549002570d8b SHA-256: 0218a7ca233d92439472c5172fc7149097e6338610f71c4e607355881e0d5c47
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. ML classification and ClamAV also flagged this file as malicious. The embedded URL is likely intended to lure the user to a phishing site or download a secondary payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=gator+guitar+cases+les+paul In PDF document text
    • https://zuverefexogi.weebly.com/uploads/1/3/4/3/134316215/8254495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459318/normal_5fb298d32e61c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0be4612facd59ceac2d5b/t/5fc35d6d9d79364840f8ba1d/1606638958319/kojomotawipudewama.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1e1d18e72e5fdb9faf46/1606295070890/taroviseme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d47371-18dc-4bd1-89bd-077bb80993f5/java_7_update_51_version_7.0.510.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/automator_to_word_converter_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6aef56f-1a10-4a87-ba73-f7b8e6c8f8b4/60831942607.pdfIn PDF document text
    • https://s3.amazonaws.com/naramuro/free_iphone_6_plus_giveaway.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfb97c37-f041-4393-b83a-3ef7a93fdddc/finofaf.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_off0000b4b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B2 5132 bytes
SHA-256: 2f299959a72e9fcfffe0f26bbc5d1b9e3236458fd59077827307658df924d188
font_01_sfnt_off0000c638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC638 9292 bytes
SHA-256: aa32247525b06d2f29f1f583c44cd2aa6330066787df35b0dd6d98dc3da079e6