Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c295a9512e283f2…

MALICIOUS

PDF

49.0 KB Created: 2020-09-11 07:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 236004ee4d939a750c63ad1944e857e0 SHA-1: 2d592f473bec8a76593a9b08851ba764f0ce4719 SHA-256: 5c295a9512e283f2ae65927f8daf53e15fac3914fcc775c97dab679445a1e861
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically pointing to 'ttraff.club'. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary purpose is to redirect the user to a potentially harmful site, likely for phishing or further malware delivery.

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.club/wix?keyword=bell+potter+listed+investment+companies+report
    • http://files.ayakampart.com/uploads/1/3/1/4/131438316/jebewa.pdf
    • http://vafup.beechworthmusictuition.com/uploads/1/3/0/7/130740069/796179.pdf
    • http://files.washingtonpedic.com/uploads/1/3/1/4/131438759/981da7fdb9d6ac8.pdf
    • http://files.inplaypilates.com/uploads/1/3/0/8/130813923/f17e700.pdf
    • http://pavirepe.teemtexturedcakes.com/uploads/1/3/0/7/130739732/razevenaboz-vewavapepaxebav-nefulen-leriwaxisakup.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/7ab50f_94b9180af4b34ccd857c5381042afeba.pdf
    • https://static.usrfiles.com/ugd/1813b3_537ce47cc28a4db2ae0e8cdf0fef9cf5.pdf
    • https://static.usrfiles.com/ugd/5cd33b_1f0e29930192452a9175dc42d9a6d999.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/gakefijuli.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/dobiwevoju.pdf
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/90195406505.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0358/files/bible_commentary_on_romans.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006952.bin
0d361d52efa1890e78ad87b2799b1db612eeec84ffd40d0e0c3316e98129fd92
pdf-font-stream PDF embedded font (sfnt) at offset 0x6952 5116 bytes
font_01_sfnt_off00007a9a.bin
85d55a98461231abacd2dee98431fd7a82c92b6ad29ed93e87d096eb827cffb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9A 14852 bytes
font_02_sfnt_off0000a8a1.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A1 4324 bytes