Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd422d9ff9c5c3db…

MALICIOUS

PDF

47.1 KB Created: 2020-08-31 09:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bd48531af0758ec329fb280244029e5 SHA-1: a6722594d68f4ae46bbb83ee7b0a4055c58dd6a3 SHA-256: cd422d9ff9c5c3db215df00ce5363c9e9756b5dae59b401a3359ff0cee1914fa
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL. The presence of numerous external links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. No scripts were extracted, but the primary malicious activity appears to be redirecting users to a potentially harmful site.

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.com/wix?keyword=best+meteorology+textbook
    • https://cdn.shopify.com/s/files/1/0433/4642/8072/files/loan_officer_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/1031/0822/files/forty_million_dollar_slaves.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43377474007.pdf
    • https://cdn.shopify.com/s/files/1/0438/8500/2920/files/make_compost_tea_without_aerator.pdf
    • https://cdn.shopify.com/s/files/1/0431/4621/5584/files/9982945564.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f46307689d54debacfec8c14670a98d.pdf
    • https://static.usrfiles.com/ugd/7f46b5_aeef6f9ed4db43a0a5e625eec56f5f2e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab5a2ddd97b54485a6a6a44b8f02f9f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed426657fc0c469bba22da7019b26597.pdf
    • https://static.usrfiles.com/ugd/cbdbb6_2b0640f44dd740298931fad245418c44.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/ocean_ofs._com.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/rights_and_duties_of_bailor_and_bailee.pdf
    • https://cdn.shopify.com/s/files/1/0437/2342/3912/files/bridgewater_hall_seating_plan.pdf
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/togagixilijinekekerilufin.pdf
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/29479856271.pdf
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/gomatozixus.pdf
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/59367333721.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_off00007ad0.bin
f22e6ba1efa6e8511e1e50a0bad1dbbe74871b3b47f8828618cf20a060b75d65
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD0 5216 bytes
font_01_sfnt_off00008c93.bin
fd46506c30f36dbe1e1aac12e396d9ec597b0ab3bde4414b384022b4ed3b344c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C93 10384 bytes