Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc1d202e7dd0e20…

MALICIOUS

PDF

35.1 KB Created: 2020-08-24 00:01:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75970fb2b0c6fb0438aba7fe82d5a813 SHA-1: db4bf47d1f029a384e6bab09e01d6b4908385fe5 SHA-256: bfc1d202e7dd0e2084d7da37e1e67e1ff92f53002fc96998d418a259c79b17ef
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=affinity+photo+tutorial+espa%25C3%25B1ol+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many hosted on Shopify, which is characteristic of SEO link farm abuse. The document body itself is heavily obfuscated but contains the same malicious URL.

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.cc/pify?keyword=affinity+photo+tutorial+espa%25C3%25B1ol+pdf
    • http://najiz.hairbykida.com/uploads/1/3/1/6/131606122/3956028.pdf
    • http://files.evelynsander.com/uploads/1/3/0/9/130969270/0577f9db799263.pdf
    • https://cdn.shopify.com/s/files/1/0441/2253/8136/files/essential_elements_2020_alto_saxophone_book_1_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/87352509550.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/xedikofukajisimila.pdf
    • https://cdn.shopify.com/s/files/1/0463/4932/0349/files/bosch_washing_machine_manual_classixx_1200_express.pdf
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/quora_app_for_laptop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4896/8100/files/zediragiwewiluzamokot.pdf
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/climatizador_cadence_505_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/functions_of_hrm.pdf
    • https://cdn.shopify.com/s/files/1/0437/6834/8829/files/xizobuvadur.pdf
    • https://cdn.shopify.com/s/files/1/0431/6135/4404/files/research_in_progress_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15501301831.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_off000048cc.bin
4ce5e3d368542e19773259ec5956c765280be7384192ead78f308ed5e8680dbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48CC 5432 bytes
font_01_sfnt_off00005b04.bin
f40b1bb159a1bcbe1221a52af49c2e5b3d14f3b63d4676d22b0c456ba318dd45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B04 10200 bytes

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