Malicious PDF — malware analysis report

Static analysis result for SHA-256 7229180d401bc953…

MALICIOUS

PDF

41.2 KB Created: 2020-09-01 09:13:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d631048fbe77e1093f0026b1ffcdc072 SHA-1: 114cb5670170059a7a0ec5dd5af9323dfa20ac6d SHA-256: 7229180d401bc9531898458ebb3f360d6e855c100f303dd04e11925d8c3a3efe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to lure users to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=cuneiforme+significado+portugues
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/bsn_sports_logo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/fusionner_les_fichiers_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4828/files/xurokemanevavep.pdf
    • https://cdn.shopify.com/s/files/1/0434/0701/6103/files/golf_gift_certificate_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/el_caballo_de_troya_2_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0463/0672/1957/files/12434089885.pdf
    • https://cdn.shopify.com/s/files/1/0447/0639/8364/files/91641433763.pdf
    • https://static.usrfiles.com/ugd/b8c837_d422ec1068354474a274f0a8a3d3554d.pdf
    • https://static.usrfiles.com/ugd/c836c3_a76e991c09cd48838d5d2145817b2ec7.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/69886175486.pdf
    • https://cdn.shopify.com/s/files/1/0433/1778/8830/files/pabiwefuvuredod.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_off000061ea.bin
bfb6bd853e05fe36e2c56d39f2ee3424897a76207f30ac8910a5e2ec62b3d5d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61EA 5348 bytes
font_01_sfnt_off0000740b.bin
bd53df0ec135085b2c5f462cd234d8ceec468ae8a7787b8178dd1e0fe3205888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740B 10708 bytes

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