Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c30c473452d207e…

MALICIOUS

PDF

36.4 KB Created: 2020-08-25 13:45:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16bd975135db18236b3849aac79c6f95 SHA-1: 33cfd2a52334614561e507c6aa12acac08e746dd SHA-256: 9c30c473452d207ed0836d77c2c06091493ed31a74c10a1e836902fca9a9ffbe
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=school+dance+2014+full+movie'. This link is presented in a way that suggests it leads to a movie, likely as a lure. The document also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or distributing malicious content. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly suggest a phishing or malware distribution attempt.

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=school+dance+2014+full+movie
    • http://dixiz.duniaamir.com/uploads/1/3/1/4/131438019/kavibilazefi.pdf
    • http://giwafura.ashanoeliyer.com/uploads/1/3/1/6/131606490/8965708.pdf
    • http://jaged.jilanalbayyat.com/uploads/1/3/0/9/130969747/6892795.pdf
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/joriwipafo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/myasthenia_gravis_drugs_to_avoid.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/tawazivabolotexifoxekaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/28145403977.pdf
    • https://cdn.shopify.com/s/files/1/0435/9372/8159/files/histology_of_gastrointestinal_system.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/79967204751.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/volkswagon_passat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/15057386423.pdf
    • https://cdn.shopify.com/s/files/1/0431/7908/1894/files/23587366339.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30552771564.pdf
    • https://cdn.shopify.com/s/files/1/0432/8128/5286/files/hand_reading_palmistry.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/nokokugeda.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e23.bin
6b63ffb353d8e6930a08e9233b31bd32bf5fbf41a05499763e9babe75797f5d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E23 5564 bytes
font_01_sfnt_off000060f5.bin
ff72210623ae677d1ad1fc3f1952c82eae046675e400bae5f33107971aaa65be
pdf-font-stream PDF embedded font (sfnt) at offset 0x60F5 10540 bytes