Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2b896d47865145…

MALICIOUS

PDF

41.3 KB Created: 2020-10-19 14:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73a410e05dfaf8edfb240ccbc19fa7f9 SHA-1: 525bdcc409124697fa6696cd343c7c17bf32d27f SHA-256: 4c2b896d4786514562cc44158ab0fbb80292dc17192fafa41577a32b242a9d85
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external PDF links suggests a link farm or SEO poisoning attempt. The primary malicious URL identified is https://gettraff.ru/123?keyword=austroads+guide+to+traffic+management+part+8, which is likely used to lure victims into clicking and potentially downloading further malicious content.

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://gettraff.ru/123?keyword=austroads+guide+to+traffic+management+part+8
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/niravubiletejoseveg.pdf
    • https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/nusukepijet.pdf
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/6449136.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0499/8981/2374/files/gubepawaxirexigibesoniwu.pdf
    • https://cdn.shopify.com/s/files/1/0266/9779/3713/files/86134413073.pdf
    • https://cdn.shopify.com/s/files/1/0428/1591/4151/files/viwujikunewozaweta.pdf
    • https://cdn.shopify.com/s/files/1/0483/9532/1496/files/social_psychology_baron_and_byrne_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0479/0786/4743/files/2834528971.pdf
    • https://uploads.strikinglycdn.com/files/9be52132-ec23-4337-862e-ff63f4e46cc3/17404361603.pdf
    • https://uploads.strikinglycdn.com/files/2a8f7b17-1481-4955-9a79-3e400ac09a9e/fisevulinoje.pdf
    • https://uploads.strikinglycdn.com/files/9184cfd8-67c4-4b69-9641-1ee0dabd0a2a/mopafakafitazog.pdf
    • https://cdn.shopify.com/s/files/1/0496/3926/0309/files/kipon.pdf
    • https://cdn.shopify.com/s/files/1/0498/9331/0631/files/kasaxegobezov.pdf
    • https://cdn.shopify.com/s/files/1/0437/5468/4565/files/rizawaxawurafazigogabodiv.pdf
    • https://cdn.shopify.com/s/files/1/0500/0917/8267/files/53553166918.pdf
    • https://uploads.strikinglycdn.com/files/744e818e-fb9e-4b82-a446-98869e0e8e86/muresadagegule.pdf
    • https://uploads.strikinglycdn.com/files/ca8db5a3-d1b6-45f0-abfb-048141fe0d36/88801818872.pdf
    • https://uploads.strikinglycdn.com/files/8db872e3-ac3d-4138-871b-2b5cce3ccf6f/30303323767.pdf
    • https://uploads.strikinglycdn.com/files/043da76b-1de0-4bfe-8187-b51d4826e243/batufugumome.pdf
    • https://uploads.strikinglycdn.com/files/f529f5e8-2648-4c2b-bd8c-57101010effd/goxopefuririgowaxob.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_off0000642d.bin
f83dda273f8e6aa0034a8f629bb690d31246c76a2e68f334c8ab7ac8a77dc981		 pdf-font-stream PDF embedded font (sfnt) at offset 0x642D 5628 bytes
font_01_sfnt_off00007732.bin
f2cb6c238cea886b2cc2199fb039e0264011144a0b42ab871658ce8a6cbf7693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7732 9444 bytes

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