Malicious PDF — malware analysis report

Static analysis result for SHA-256 379587fb36d4a777…

MALICIOUS

PDF

51.0 KB Created: 2020-08-22 21:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57ebd1f88e2b20020c999ee83f87132c SHA-1: f398c46c175fbcb580ee61df40a8d4fabfe4a05b SHA-256: 379587fb36d4a7776c842df1c13a5a85f73c81c50f16080458e89e073c6ad8a0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=mailto+contact+form+html'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0433/5114/6650/files/xigabezokigusegegejamoxo.pdf'. The document body, though heavily obfuscated, contains references to the redirector URL, suggesting an attempt to direct users to malicious content.

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.com/pify?keyword=mailto+contact+form+html
    • http://files.cakemoment-wedding.com/uploads/1/3/0/8/130874055/bizabimobonapubowabe.pdf
    • http://files.amandagullattceramics.com/uploads/1/3/0/8/130813757/9005551.pdf
    • http://redowisug.burlingtontree.ca/uploads/1/3/1/3/131380755/zuvuwojavowimub.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6650/files/xigabezokigusegegejamoxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6179/5230/files/82594956574.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7437/files/tufapiroboponagipefafofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/causas_de_adenitis_mesenterica_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/davatonavolevusufizuxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1732/9064/files/stevie_ray_vaughan_autopsy.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/degejuwetisagemudow.pdf
    • https://cdn.shopify.com/s/files/1/0432/8095/7593/files/xitexode.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/54308614465.pdf
    • https://cdn.shopify.com/s/files/1/0435/5650/3713/files/agnes_of_god_script.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/37747425974.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/livre_pour_apprendre_le_piano_seul.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/8237328673.pdf
    • https://cdn.shopify.com/s/files/1/0438/6455/5675/files/getajeditogusud.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_off00007e2d.bin
736fe12e990755dbb289d72b7d92191dc983c7665fffafe1ce1aa9e2690f067b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2D 4948 bytes
font_01_sfnt_off00008ed5.bin
813708d350f7ceaefe2c9d9665a6ab764f10eeed8191286cfca165175ab69db1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED5 14808 bytes