Malicious PDF — malware analysis report

Static analysis result for SHA-256 22afefe205a5f94c…

MALICIOUS

PDF

39.3 KB Created: 2020-08-31 18:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8404a6f666b8b9969958b4109e575bdf SHA-1: 0d13b151455c2a7661a2c820858fb5fbc0a2804d SHA-256: 22afefe205a5f94cd6ce88d405680f47557233ecc1ad0da1e7054072ca25fd78
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'size chipboard sheets'. The presence of multiple benign Shopify links suggests an attempt to blend in with legitimate content while directing users to the 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/wix?keyword=size+chipboard+sheets
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/il_cattivo_tedesco_e_il_bravo_italiano_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/44074983531.pdf
    • https://cdn.shopify.com/s/files/1/0464/9143/5176/files/rixaxavuvuropimezov.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/51497917542.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bokowolexom.pdf
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/11356457596.pdf
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/97012536945.pdf
    • https://cdn.shopify.com/s/files/1/0449/6785/4248/files/ceragon_microwave.pdf
    • https://static.usrfiles.com/ugd/b8c837_d67d8056b5154b03857102a7e4b00ac6.pdf
    • https://static.usrfiles.com/ugd/f55bec_aee195ed8077485184f7512b2191ca8e.pdf
    • https://static.usrfiles.com/ugd/b8c837_ada084d37453491c81c6fd609163feab.pdf
    • https://static.usrfiles.com/ugd/b8c837_0bc6a4492a024c3e8a63f388d20d6214.pdf
    • https://static.usrfiles.com/ugd/83e24f_8dee227715b5403c9aa3751181b1dbe6.pdf
    • https://static.usrfiles.com/ugd/eda9ba_b624af9200364a9e8e87ea82f265d8bb.pdf
    • https://static.usrfiles.com/ugd/b50c55_30f994b3c1394eee8bbe86adfa77a97b.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_off00005a2e.bin
b9f6fb498f988baa350932bb9506dbb917c91fe9a91d3fbb56b431ddaea9ea3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2E 5420 bytes
font_01_sfnt_off00006c92.bin
7b9ea60c981180c939afa29a00c540c1e95c62a56694d5a2a83d5e2229c108a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C92 10656 bytes

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