Malicious PDF — malware analysis report

Static analysis result for SHA-256 030a84df0961e7e3…

MALICIOUS

PDF

41.7 KB Created: 2020-08-31 17:08:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f53e0cc170c2a05c5bdfcf0128e8a65 SHA-1: dd6154ef27715e9e8d00c636826429950052da20 SHA-256: 030a84df0961e7e3cf1130509d15fd78a257c7a65fc78830d8a9ae48e7b1e581
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL, 'https://ttraff.cc/pify?keyword=android+1+modded+games', is flagged as a known malicious redirector. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution, under the guise of providing game-related downloads.

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=android+1+modded+games
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/d43733_ba4d75848b114d0cb5871f9a8a28b57e.pdf
    • https://static.usrfiles.com/ugd/9e41f0_a08d664fd0d54b859922bbe5e1bee2cd.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_c20f14d21211407a95d4c78545565de4.pdf
    • https://static.usrfiles.com/ugd/60933b_937a3037d9954a7b9b0d6071f9e68c12.pdf
    • https://static.usrfiles.com/ugd/20d83a_8ec958e3a43e4c6fa647dfd5b3267738.pdf
    • https://static.usrfiles.com/ugd/ace02d_142ce402defb4390a06872a078dd4c0e.pdf
    • https://static.usrfiles.com/ugd/b77b08_6e56dcb2290c49beabac4e947e2105f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab96afde982e44ff8247b25864394a6b.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_6e032314e0124cd497c005bc3aeb4cad.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3b3e9e6523146d191ab8bd65508d732.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cbe3226fcdf442c910801843d1f1c5d.pdf
    • https://cdn.shopify.com/s/files/1/0433/0287/9387/files/kejolamujodosan.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/95782100855.pdf
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/mudorosusureritatawuj.pdf
    • https://cdn.shopify.com/s/files/1/0440/4881/0149/files/ijoy_bioniq_bluetooth_headphones_manual.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_off0000653a.bin
e6e8b0126e6a87a44e75e16f7bcdc047a278130cdc4a7928d1ea347d56ec7559
pdf-font-stream PDF embedded font (sfnt) at offset 0x653A 5152 bytes
font_01_sfnt_off000076ac.bin
874b38a224b5a9c3edd9b502c9f97e4ff61315e4222a90ee9e94902c7814e526
pdf-font-stream PDF embedded font (sfnt) at offset 0x76AC 10344 bytes