Malicious PDF — malware analysis report

Static analysis result for SHA-256 4333572297f08218…

MALICIOUS

PDF

43.9 KB Created: 2020-10-28 23:59:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bbceb03a302c95c7cee3079585819a1b SHA-1: 0bbdd0082147c830dbc66c2d8791c66e95cd2c3f SHA-256: 4333572297f08218e0c2efaf5deb8d6915ad502a9d336f22b7a2efe980ad1ebc
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, https://ttraff.ru/123?keyword=lazy+boy+small+swivel+rocker+recliners, is presented within the document body, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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.ru/123?keyword=lazy+boy+small+swivel+rocker+recliners In PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/metor.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/wawiboramakewegaji.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/3049569.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/giditosoduno_xotulosuzi_telejoxelujade_penat.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/zizene/82107712226.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/81571739720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f20482bf-5a42-4086-a86c-4c7771e4480f/24304074012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/69265932269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6502/3898/files/malisitopenulevabope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3096/1054/files/project_business_case.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/22593154392.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/linuvanezuputamav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f72aea3c-7ebe-4bd7-a23c-6c1a4e708dd4/11685957714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903e4234-03ec-436d-8454-af948e301401/lukesed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/740b1531-aa95-4126-91ea-8f7701306d52/98957601513.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/manual_aptana_studio_3_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf5e7196-cf8b-4595-86d6-c0b0732e6660/watch_four_christmases_online_free_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4868/8552/files/50655643862.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_off00006ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE7 5396 bytes
SHA-256: 80f979a05ea3850bcc163609c2bb42e5b1e16106d0ff0b2e93cf6f5e6c490de5
font_01_sfnt_off00007d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D54 11104 bytes
SHA-256: 852669caccdc51425cdb4d1cfe9ae04150379f7fefdb89e090a26cc5c564cddc

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