Malicious PDF — malware analysis report

Static analysis result for SHA-256 950b07f9c2faf061…

MALICIOUS

PDF

44.4 KB Created: 2020-08-08 19:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45f4bff54655cbec52ee9433d3e5d3fb SHA-1: 469472d5be0ae82153efeefaa8d4e9be7961eba0 SHA-256: 950b07f9c2faf0617184aec0134d960e60aacba30e47d0b72b04f4f5eb8b1245
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=algebra+2+book+pdf+pearson'. Another critical heuristic identified a large number of external PDF links, suggesting a link farm for SEO manipulation or traffic redirection. The presence of a 'SE_LOLBIN_RUN_COMMAND' heuristic indicates that the document likely contains instructions or visible command text involving Windows execution tools, such as PowerShell, to facilitate the redirection or further payload delivery.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=algebra+2+book+pdf+pearson
    • http://files.ifunsocial.com/uploads/1/3/1/0/131070702/568100.pdf
    • http://files.ruthscheuing.com/uploads/1/3/1/4/131406060/kezozalalogeg-dorobomabadedoj.pdf
    • http://files.statsworldcollectibles.com/uploads/1/3/0/7/130775607/fasunotata_xoraxed_darone_tunuwu.pdf
    • http://files.priorityenvironmental.ca/uploads/1/3/2/7/132740415/poturowinu-pepurefeme-zomoxiru.pdf
    • http://files.marti2heal.com/uploads/1/3/0/7/130739892/5b53a0fb.pdf
    • https://cdn.shopify.com/s/files/1/0434/3218/1909/files/wget_google_drive.pdf
    • https://cdn.shopify.com/s/files/1/0431/8478/3509/files/19972765016.pdf
    • https://cdn.shopify.com/s/files/1/0437/5629/0206/files/burket_oral_medicine_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/36490095923.pdf
    • https://cdn.shopify.com/s/files/1/0434/7333/8533/files/21266804413.pdf
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/cell_biology_multiple_choice_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7820/files/vofexijek.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/ccna_course_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/wigidodegodegab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/vawukoxoradojesekeferazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5920/7579/files/19346658849.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_off00006800.bin
93293b05c21b441f3df73318d6972c8991c19a3edf845b0c003b29d365a44da9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6800 5532 bytes
font_01_sfnt_off00007ae5.bin
7ee316f76c4dc2ee678066044b5dad3a9cdaad004bc4d491b6cc5bbf64d79279
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE5 13168 bytes