Malicious PDF — malware analysis report

Static analysis result for SHA-256 836b99d5d7932e87…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 02:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87402e3b592d5e99db2cbf6f7ae8e9e4 SHA-1: 2fc1bea35d7fac3c8f6707d795ea9610e0c69bc3 SHA-256: 836b99d5d7932e8785b8aa8e6884b6f3f07d96eecd9e88d86c9ef382fe9b2c02
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One such link, 'https://ttraff.club/wix?keyword=livre+plantes_m%25C3%25A9dicinales_pdf', is flagged as a malicious redirector. The document body, though heavily corrupted, contains text related to 'Livre plantes m cdicinales pdf', suggesting a lure to disguise the malicious intent. The presence of many links hosted on cdn.shopify.com, while individually benign, contributes to the overall link farm characteristic.

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.club/wix?keyword=livre+plantes+m%25C3%25A9dicinales+pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/nejireguxasepasepodulu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9141/7495/files/washington_state_immunization_form_for_school.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/2298113219.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/dewokezare.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/psicologia_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5965/files/kimuzelavopibubisej.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8659/files/jujuf.pdf
    • https://cdn.shopify.com/s/files/1/0445/6952/6436/files/reading_books_for_2nd_graders.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2208/files/net_core_email_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/1683/0632/files/chemistry_of_polycyclic_aromatic_hydrocarbons.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/46451794179.pdf
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/11055639560.pdf
    • https://static.usrfiles.com/ugd/f103bb_91f6a809cda8413c91b51af8e648ce7b.pdf
    • https://static.usrfiles.com/ugd/b8c837_50dd207bfee7435e9a2ca0d5fbc1986b.pdf
    • https://static.usrfiles.com/ugd/b8c837_14cb80bdcb40485c9783e7d101722bf0.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd8ff4ad550544d0aeebc004da01322d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9757a9fd410f454e90d91bf7c36e36fc.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_off00006490.bin
530502477e6fc1992b2b00747ba64030dcf267be470c771c7e0ae4131c59dd13
pdf-font-stream PDF embedded font (sfnt) at offset 0x6490 5444 bytes
font_01_sfnt_off000076b3.bin
832f3bb4e9f0509baf37867b9f5fd94a4eeabd8741cd22a6798147e1df70569b
pdf-font-stream PDF embedded font (sfnt) at offset 0x76B3 12452 bytes