Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f565bb3fbba9dec…

MALICIOUS

PDF

65.8 KB Created: 2020-08-24 23:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ccd432b271c791c7b0d33eece66abf5a SHA-1: ed6ee026f8ea0403a3d779c0f8f81561ec5a50c8 SHA-256: 9f565bb3fbba9dec5388448216627628aaa01daae4db6439450fb8974c7d7bf1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the string 'Financial tracker template' and the malicious URL, suggesting a social engineering lure. The presence of a link farm heuristic further indicates malicious intent to distribute content via multiple external links.

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.cc/pify?keyword=financial+tracker+template
    • http://gozef.aayogaandwellness.com/uploads/1/3/1/4/131454215/f86768f5ace2.pdf
    • http://files.musky-lures.com/uploads/1/3/1/0/131070124/pujugaweka_rimituwijuvifib.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0093/files/kadojemepodup.pdf
    • https://cdn.shopify.com/s/files/1/0436/4386/3198/files/weather_for_ridgecrest_ca.pdf
    • https://cdn.shopify.com/s/files/1/0433/8669/9925/files/75914432182.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/zazelenozoxomevot.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4992/files/cinderella_transformation_dress_hire.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/dudinobotibajed.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/30936514361.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/69029292951.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b82e.bin
1d3699f7081f671cee9e2eda92a39ffb230a80ebba4ed0e21c9ac9d56746cbb7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB82E 4600 bytes
font_01_sfnt_off0000c7a4.bin
c50a856d9b41e00e157891d7472f51e95d22b4dec4122b7c19cba1dbb2e84510
pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A4 11112 bytes
font_02_sfnt_off0000ec8e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8E 4324 bytes