Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f9165ea9e9d8c41…

MALICIOUS

PDF

43.2 KB Created: 2020-08-03 07:12:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42332caddaf9f9f6b15c916781660a26 SHA-1: cbb90b75f39cff25a7df6309b7d327c00ee1cc6e SHA-256: 4f9165ea9e9d8c41c3248a0cd7889b66740a4c988176a5987aaa0d6cf0ce4a03
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to a URL that includes a search query for a 'porter cable dovetail jig supplemental manual'. This suggests a social engineering lure to trick users into clicking the link. The document also contains a large number of embedded links, many pointing to Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The primary malicious IOC is the redirector 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.ru/wb?keyword=porter%20cable%20dovetail%20jig%20supplemental%20manual
    • http://files.artandroulla.com/uploads/1/3/1/3/131380773/6e51b943ebb202b.pdf
    • http://files.enterthemovies.com/uploads/1/3/0/7/130739069/f03ae470.pdf
    • http://files.orendagametables.ca/uploads/1/3/1/3/131398308/xefugu_sekuzizu_lavevotigix.pdf
    • http://files.trericciwines.com/uploads/1/3/0/9/130969371/pepagezumabi-zevikokosew-depetibikigodam-murolomikilitim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutim.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/61385583478.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/vivifofavuwusexus.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/70258871448.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/96_buick_le_sabre.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/photovoltaics_design_and_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/6498/2693/files/xojezaluxoperumozelaba.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/pimifamite.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/lunar_temple_neopets.pdf
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/73_monte_carlo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/99544768535.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/71661629573.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a27.bin
f24b27f97dee24c9c2547058474139b96a4839e9d5958bd82fddc66245618d73
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A27 5672 bytes
font_01_sfnt_off00006d5a.bin
cb159cc9d714520fdf604515834a8e5d6ccdf81551317d8133b939af7313f940
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5A 6068 bytes
font_02_sfnt_off00007d09.bin
0001cad6c2c1cb955099277d16cdb1385af39c6781c32375f658d87b6dcd2183
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D09 9976 bytes