Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8317d65ec78ac4c…

MALICIOUS

PDF

33.0 KB Created: 2020-08-19 03:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 447272bc385dffa196ca999e186679b7 SHA-1: 033201e77ef2757c25aeedc5cb3a8f5d84520775 SHA-256: c8317d65ec78ac4c7399ebb60a460abbb6d5050e8574c06d4b82201908c00a2e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=basler+electric+transformer+120v'. This URL is embedded within the document body, suggesting an attempt to trick the user into clicking it. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or SEO manipulation tactic. No scripts were extracted, and the document body is heavily obfuscated, but the primary intent appears to be directing the user to a malicious 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.ru/pify?keyword=basler+electric+transformer+120v
    • http://lagomo.asubmersible.net/uploads/1/3/2/8/132815094/zekokugexir.pdf
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/jizexejokunitojuzepozo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/cage_alcohol_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/xovuludutosinutefisixefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/aloha_oe_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/9258/2293/files/jedatidusum.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4587/files/cambridge_grade_6_science_past_papers.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/feguzagudu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/master_apache_jmeter_from_load_testing_to_devops.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/15768171331.pdf
    • https://cdn.shopify.com/s/files/1/0430/8818/3456/files/12174077827.pdf
    • https://cdn.shopify.com/s/files/1/0431/3769/5895/files/zasofuzukusolonalar.pdf
    • https://cdn.shopify.com/s/files/1/0447/2215/9772/files/saint_saens_the_swan_piano.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_off000042c2.bin
094d5162a53008e7650d98b4259aad2596d24951bd683127f5c4ec552736e7b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42C2 5460 bytes
font_01_sfnt_off00005545.bin
503592cfb3096ea087a70c33161a4b915a5d5102a87f90b6d92ee9be38f08d2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5545 9960 bytes

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