Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6031c384df85697…

MALICIOUS

PDF

43.7 KB Created: 2020-11-01 22:28:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4099a9aaaf2cf7cd729aba5ed302def0 SHA-1: 763df6a52344646548e36465c4763f6a615f887c SHA-256: c6031c384df85697e0a47ef79996e8ff53f8671f1d983160f73061157d812390
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, contains URLs that are likely intended to lead the user to malicious infrastructure. The primary malicious URL identified is https://ttraff.club/123?keyword=queen+bees+and+wannabes+pdf, which is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.club/123?keyword=queen+bees+and+wannabes+pdf
    • https://lotogifivetizub.weebly.com/uploads/1/3/4/3/134309957/2133897.pdf
    • https://cdn-cms.f-static.net/uploads/4407988/normal_5f9689a20cd7d.pdf
    • https://xutifivaluladar.weebly.com/uploads/1/3/4/3/134337767/dc10de7ee5a7d.pdf
    • https://cdn-cms.f-static.net/uploads/4421462/normal_5f968c2cdbafe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/paropabaru/20661612476.pdf
    • https://s3.amazonaws.com/henghuili-files/reorder_pages_adobe_pro.pdf
    • https://s3.amazonaws.com/vajefam/california_garter_snake_poisonous.pdf
    • https://s3.amazonaws.com/gofilafixu/the_north_face_mcmurdo_parka_iii_taupe_green.pdf
    • https://cdn.shopify.com/s/files/1/0500/2543/1204/files/photoscape_app_download_for_android.pdf
    • https://s3.amazonaws.com/zuxime/86620641541.pdf
    • https://cdn.shopify.com/s/files/1/0492/3018/4601/files/95730991930.pdf
    • https://s3.amazonaws.com/fedufiporara/waking_up_white.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dba.bin
8f12bfa8b2116b448c258d0d65e7cb43c606bbd5c25bd17effabaf36b47730b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBA 5200 bytes
font_01_sfnt_off00007f89.bin
bf8981eb75ca8e0da153a3a704230751b0bfde344f752f572965620a6154e64d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F89 10256 bytes

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