Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0451b19b7d0596…

MALICIOUS

PDF

45.7 KB Created: 2020-08-29 15:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e24a89f5487440d61a42b781a951c16 SHA-1: f8bdca1aee09681b14963cb9b5ee14018b924448 SHA-256: 0a0451b19b7d05967a81684b13a1eb3ac21b498ff4cf6099e14eee19a7b63d98
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with a critical heuristic identifying one as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Gta vice city cheats app download for android' and a URL that matches the malicious redirector. The presence of a large number of external links, many pointing to user-generated content sites, suggests a link farm or SEO poisoning tactic to drive traffic to malicious sites.

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/wix?keyword=gta+vice+city+cheats+app+download+for+android
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_6f9bac77e7bd439588c58f39a9531f0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_96b2e90230c841c2ac1b7b735ba3c03a.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1c22cce53d44ffab0fb13b1d5cecbab.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2226b7dbddb43fc8a373a1bb28ebd68.pdf
    • https://static.usrfiles.com/ugd/89064d_272fc7693dca40fd8dada6485f99dc38.pdf
    • https://cdn.shopify.com/s/files/1/0438/3290/1789/files/bilingue_allemand_franais.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/century_ply_laminates_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/structural_adjustment_programs_in_nigeria.pdf
    • https://static.usrfiles.com/ugd/b8c837_74ae297ff93b4b328d2d254a0eeb62d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_c79df8530f58410ab29620deeff8cf9f.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bf5.bin
23205cbcab095c231d12b05490baa45070504c33d8acd631420924b15fe3b68d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF5 5316 bytes
font_01_sfnt_off00006e14.bin
a1c68180eae955d710b1f59d89b7b5bb1f22246194deffa7b9c3298859733f9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E14 2140 bytes
font_02_sfnt_off000077ec.bin
03432a5a70db81a4ed61ae1b108319a5e6af5f5cfd581675a6e7cc97436d6a64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77EC 10528 bytes
font_03_sfnt_off00009bb7.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB7 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.