Malicious PDF — malware analysis report

Static analysis result for SHA-256 562a2ed5d9bef4d4…

MALICIOUS

PDF

72.6 KB Created: 2021-01-05 19:47:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2116c5a5927e2dfe7bb695f9b9107e24 SHA-1: 7971a9e5eee5b2c0a32056ed5262eb670f78ce02 SHA-256: 562a2ed5d9bef4d4ae8d7d00cb7972c81ba4840d1f97ef300e9dfedd06cf58d4
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 'traffking.ru'. This URL is likely used to redirect users to a malicious site for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL indicates a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/aws?utm_term=crossfit+bodyweight+workout+plan+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5fa42ea8125db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384650/normal_5feff286c6458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410717/normal_5fa8888501266.pdfIn PDF document text
    • https://cdn.sqhk.co/zurosewe/cia6Rhc/56876059457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f87eb242761b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495409/normal_5fec29125cb7b.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/e7285096-0648-4074-92fc-94f1cdb3e93a/nasevofimu.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/zatogujemojuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e946336-6e2f-4097-9c18-8f4caba85d53/apocalypto_hd_full_movie_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/active_reading_marine_ecosystems_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb66c1f0-8f18-402f-9efc-7be69d4c60f5/master_cleanse_secrets.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/17266043997.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/difference_between_android_smartphone_and_tablet.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_off0000de2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2B 5608 bytes
SHA-256: 0cde20326379431fe04e2c49697e8a3bac5cb59cad8a0af7cbe699944d89324a
font_01_sfnt_off0000f144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF144 10612 bytes
SHA-256: d0ae49291b576a1b9af8f5ed338f2a5f0ae869168945f7400fa2f81c033c6e5d

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