Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b289b3b5b972cc…

MALICIOUS

PDF

41.6 KB Created: 2020-08-20 03:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5740d275fca56a1c0d1271c41ee6c824 SHA-1: 627aba33822c3b8fb5d7b01fd9812a674056b0aa SHA-256: 45b289b3b5b972ccdbf2ca108d3b6d553b28dd2d063d447c1eb44f5cfe18e6ee
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com, but some pointing to potentially suspicious domains. The document body, though heavily obfuscated, contains the same suspicious URL. The primary attack pattern involves tricking the user into clicking the malicious link, which likely leads to a phishing page or malware download.

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=formation+potier+ceramiste+toulouse
    • http://kelanawak.duhbuhlyoo.com/uploads/1/3/1/0/131069934/9948161.pdf
    • http://povuliti.p2tp-vaiscope.net/uploads/1/3/2/8/132814930/fodazegiwejemi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/fuliwefo.pdf
    • https://cdn.shopify.com/s/files/1/0448/0860/1762/files/52980881585.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/jawifutuzerawozerufuvib.pdf
    • https://cdn.shopify.com/s/files/1/0431/6767/8618/files/gestalt_principles_of_design.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/nightmare_troubadour_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0428/7732/1379/files/42901504792.pdf
    • https://cdn.shopify.com/s/files/1/0435/0004/4454/files/animal_symmetry_and_phyla_worksheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/1681/3735/files/iterate_over_hashmap.pdf
    • https://cdn.shopify.com/s/files/1/0430/6052/7265/files/vuvasoxigubejirez.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/kemelo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/72432738500.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_off00005f3c.bin
25549a3742f898dd5171fae6d538c48a83e243537d516ad276efdb118caa65b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 5032 bytes
font_01_sfnt_off0000703e.bin
a533577784c89d43242f0d9952b55bc9251ee5ddccf5e653279486b6203e05eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 12812 bytes

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