Malicious PDF — malware analysis report

Static analysis result for SHA-256 3501103e582c1006…

MALICIOUS

PDF

41.2 KB Created: 2020-08-31 02:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ff698f96c0d9cab786f7c4129e0ad19 SHA-1: 4de28b6f14c60802d247c6290d26273e57e1417b SHA-256: 3501103e582c10067ce9ae25501e80012089853a81c1946b695255915fab07c0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=fish+soap+carving'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, including 'https://cdn.shopify.com/s/files/1/0432/2908/5859/files/gwent_card_crafting_guide.pdf'. The document body, though heavily obfuscated, contains the malicious redirector URL, suggesting the primary intent is to redirect users to malicious content.

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.cc/wix?keyword=fish+soap+carving
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/gwent_card_crafting_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/affidavit_of_single_status_template_canada.pdf
    • https://cdn.shopify.com/s/files/1/0438/4086/4421/files/19144695355.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c88fd91eb284196bf4a88e69f2587c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_b13eb799a49f48f1a2cc878bcc9686c7.pdf
    • https://static.usrfiles.com/ugd/2274a7_d7065ef3fdf2448abd9b6ceb307b0e10.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/65656329076.pdf
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/cirrocumulus_stratiformis_undulatus.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/zalama.pdf
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/xajarowezova.pdf
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/vaxoretejewabefavuku.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e9cc5ab94c448da854a1bd4eeb2081d.pdf
    • https://static.usrfiles.com/ugd/784815_ed897f3899014b6db334705f684a797c.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_off000064fe.bin
0eb4e46e37202456faff991668c8105f6169746eaea9e403e257ae147ae3d35a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64FE 5180 bytes
font_01_sfnt_off000076a0.bin
4ea36e145686360a3358272e1ba28102efcd34ba83909e4b3ce885a8a357baf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A0 9748 bytes

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