Malicious PDF — malware analysis report

Static analysis result for SHA-256 e097f09f2fa03644…

MALICIOUS

PDF

42.4 KB Created: 2020-08-23 19:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0b9f1a8122e6683e9815632b1050fdf SHA-1: 4210d6221dbc218c9f7a5326dfb4fe04ed834697 SHA-256: e097f09f2fa036441c6be2fbc122603a2c273a0bd1807010e300092b535e792b
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=unconformity+meaning+science. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to lure victims. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=unconformity+meaning+science
    • http://palip.djsprout.com/uploads/1/3/0/7/130775350/sogotekizi-tuxefobolixuret.pdf
    • http://fedake.germanimmersionprogram.com/uploads/1/3/1/3/131383483/natategomumopepako.pdf
    • http://sewogom.ancientayurvedic.com/uploads/1/3/1/3/131384714/28045dd09.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4637/files/pakistan_newspaper_in.pdf
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/overboard_2018_parent_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/4498/6280/files/zaxevatutukepifa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/bloons_td_6_free_new_version.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5772/files/psicologia_de_la_motivacion_y_emocion.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/hierarchical_taxonomic_system_of_classification.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/54346244538.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5906/files/xadalumugojezugeketu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5277/7118/files/taller_de_robotica_para_nios.pdf
    • https://cdn.shopify.com/s/files/1/0429/3630/3782/files/78542018254.pdf
    • https://cdn.shopify.com/s/files/1/0436/2131/8818/files/lagorexebifarapewutusiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3839/9912/files/57367640329.pdf
    • https://cdn.shopify.com/s/files/1/0431/7688/6431/files/nopilobilepajibetaxozi.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_off00006380.bin
ebb02af008180dc0bff8736bada45a949243af16ca8c58ffd84543b74baf3e0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6380 5264 bytes
font_01_sfnt_off0000754e.bin
7e086e21c380df2cfd2a990ce59b0cd1b58ab7a3628128ae509f3f5e25a41f51
pdf-font-stream PDF embedded font (sfnt) at offset 0x754E 12372 bytes