Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbbc4cffcebcbe6…

MALICIOUS

PDF

41.2 KB Created: 2020-08-31 22:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a6ea25e1e7f2966a94d1e68b3cb53f3 SHA-1: 269c23eeb7f769d84b3562180c085f9557c8b6e0 SHA-256: bdbbc4cffcebcbe66edbdcbb2907075181fb128a1c3c22b9b56c7c296c60fd4f
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=google+chrome+dev+for+mac'. The document also exhibits characteristics of a browser extension installation lure, a common social-engineering tactic. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm designed to improve SEO for malicious content or redirect users to harmful sites.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/wix?keyword=google+chrome+dev+for+mac
    • https://cdn.shopify.com/s/files/1/0440/7253/4168/files/mikupezedop.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/frontiers_of_biogeography.pdf
    • https://cdn.shopify.com/s/files/1/0438/3644/0733/files/39419617305.pdf
    • https://cdn.shopify.com/s/files/1/0437/5101/4551/files/84052673418.pdf
    • https://cdn.shopify.com/s/files/1/0434/3486/8897/files/86655228589.pdf
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/best_airplane_fighter_games_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0438/1540/3677/files/14344005555.pdf
    • https://cdn.shopify.com/s/files/1/0433/3925/1870/files/i2c_scanner_arduino_uno.pdf
    • https://cdn.shopify.com/s/files/1/0438/3971/7538/files/multiplying_and_dividing_scientific_notation_guided_notes.pdf
    • https://cdn.shopify.com/s/files/1/0462/0232/3094/files/najogilireso.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/bugujaxupozakiropokax.pdf
    • https://static.usrfiles.com/ugd/628a76_c7f04fe118e0497496a762a5d4214f8d.pdf
    • https://static.usrfiles.com/ugd/bae363_4cf20b771a8d4e539e130c0a25a26d0f.pdf
    • https://static.usrfiles.com/ugd/565485_9228fac5c8e047e3a3ad1178b55bec17.pdf
    • https://static.usrfiles.com/ugd/1b8612_8399ad3fd4a54c0e8bec5ba5e090cb9d.pdf
    • https://static.usrfiles.com/ugd/3615fb_97fa69653dff4f108b82f0b5d81a2b8f.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_off00006410.bin
0745c87085885ce9f5ff2442539737ba64265ffac1759341818d2d9ec633e53c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 5348 bytes
font_01_sfnt_off00007622.bin
b7332e8ef5e415af7171ee7b7af97f80bb5fc70fb77983067d2d7e04cbd71be4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7622 9964 bytes