Malicious PDF — malware analysis report

Static analysis result for SHA-256 05130e7820837457…

MALICIOUS

PDF

44.8 KB Created: 2020-08-09 10:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c336c03c3fe62efc828cc0d8e1a4ab6 SHA-1: 580db224aafc561b3420377410f7bf6c12c4f72d SHA-256: 05130e7820837457d989174c03c99b05a3368f7b9cf19853c0d9b261539dc119
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious sites, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristics. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=weekly+tax+table+pdf+2020'. While no scripts were explicitly extracted, the PDF structure itself facilitates the embedding of these malicious links, suggesting an attempt to direct users to external resources for further compromise.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=weekly+tax+table+pdf+2020
    • http://files.talkincorporated.com/uploads/1/3/2/7/132712163/vewipixosowerag-sibufut-lavenebovowomop.pdf
    • http://tekeg.shockersbaseball.net/uploads/1/3/1/3/131380429/9c02ad4e19.pdf
    • http://mopobi.scholarwanders.com/uploads/1/3/1/4/131483254/7045dea.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/89699856846.pdf
    • https://cdn.shopify.com/s/files/1/0434/5295/6838/files/lekerolasid.pdf
    • https://cdn.shopify.com/s/files/1/0435/3022/3775/files/koxoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6983/2354/files/ketelatid.pdf
    • https://cdn.shopify.com/s/files/1/0432/7564/9180/files/job_interview_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/construction_supervisor_license.pdf
    • https://cdn.shopify.com/s/files/1/0432/3396/8287/files/avenged_sevenfold_afterlife_tab.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/5873706639.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/46615813209.pdf
    • https://cdn.shopify.com/s/files/1/0437/9430/1085/files/moduzojoro.pdf
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/lovinimitoxaxepajeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/9325/3526/files/operation_barbarossa_nigel_askey.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_off00006fc2.bin
266cadff5d34d1e59feac5555af780666fa7e08c90acc4b4f7e484c73191ecdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC2 5420 bytes
font_01_sfnt_off00008266.bin
0ab9cd006d50ed59a52e58023ad8fa666ac8417e92e2da0f47f6e6d85f672f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8266 10604 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.