Malicious PDF — malware analysis report

Static analysis result for SHA-256 91736dfe4a7d6227…

MALICIOUS

PDF

43.1 KB Created: 2020-10-31 17:23:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 7167c60615a89bf7163592d53bb54f1a SHA-1: 5893de7d058f99ddba94d924492750c852ee016a SHA-256: 91736dfe4a7d6227eb87400b589daf0dc11f674cab75b4602317cfcf5aa3e53d
114 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/123?keyword=floureon+power+meter+manual'. The document body, though heavily obfuscated, contains this URL and appears to be a lure, possibly for a scam or phishing attempt, as indicated by the 'SE_CALLBACK_LURE' heuristic. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ttraff.com/123?keyword=floureon+power+meter+manual In PDF document text
    • https://femekeviwafuga.weebly.com/uploads/1/3/4/3/134345727/tarunasumiza_birujoxabu.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/sebipuzekegarif.pdfIn PDF document text
    • https://gixawixo.weebly.com/uploads/1/3/4/3/134322292/jorapebovino.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/doteta.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/d09c9ec9-3619-40ca-84f7-bd4f7b897d77/xbox_one_x_vr_headset.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/pdf_para_aprender_ingles_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/97590662907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6d889bc-0c46-4626-ba01-ccc0dc457d10/79762907845.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d1d00f2-a28f-42a2-9e12-41a1051adac8/60804973634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fc0f8d9-67dd-4b51-925c-e29ba4b2885a/diccionario_etimolgico_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/titixinanobafopefav.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/arguments_for_and_against_free_trade.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_off0000695c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x695C 4836 bytes
SHA-256: 683ee68d26a1ae7fc5269d6a9981265e9445c20e49c1c2526bfe959fbc1f23a6
font_01_sfnt_off000079c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C7 11120 bytes
SHA-256: 153531c5e6b97599bb63d70207c4453c4e1acf808b4912138d54bace73128d50

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