Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ad9ffedd0647e5…

MALICIOUS

PDF

47.2 KB Created: 2020-08-04 23:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 412656d7347467ca4ae396b035ab52c5 SHA-1: 65292a19850595d38d1f0a45862dbc87b0e4138e SHA-256: 03ad9ffedd0647e5de2b4ea916af09e69cf3ca979e03f6c00d5d0c3b467d059f
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the target search query and the malicious URL, suggesting the file's purpose is to drive traffic to the redirector. No scripts were extracted, but the presence of embedded URLs and the heuristic firings strongly suggest malicious intent.

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=chamakam+meaning+in+telugu+pdf
    • http://files.espacepilates.com/uploads/1/3/2/6/132681901/1dad5e2.pdf
    • http://files.pathhomewa.com/uploads/1/3/0/7/130775245/3806079.pdf
    • http://files.salt-kitchen-co.com/uploads/1/3/1/4/131437623/mikejazujibuzej.pdf
    • http://files.coldharborroadcoc.org/uploads/1/3/0/8/130873983/2c1d1b4a02.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/princess_mononoke_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/danudan.pdf
    • https://cdn.shopify.com/s/files/1/0440/1784/4382/files/8478743679.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/pete_s_opengl2_driver_2._9.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/28206004956.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/xawabiraworomubivadim.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/kubujapapekawatat.pdf
    • https://cdn.shopify.com/s/files/1/0437/0294/3909/files/gozomo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/mewozoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/motadijejakunedexuvuseko.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_off00007c98.bin
29a37f1da6a9591b3827c94d9552de785d1be32efd93ba6383118111ab9536ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C98 5152 bytes
font_01_sfnt_off00008dfc.bin
bf7032c3686d4e01ed1447b6638d6542192a4d9561da34607940d3b2635564ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFC 9816 bytes