Malicious PDF — malware analysis report

Static analysis result for SHA-256 553760dc9d4d5412…

MALICIOUS

PDF

37.2 KB Created: 2020-08-29 07:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65919fc3b5e1b20ea7ad0b73527f8c9f SHA-1: f310270496d15c366a15154f4fba5db0a998af7b SHA-256: 553760dc9d4d54121766fa388d768c9c0770a640e57da2bd5b09c1eed5fe5f2c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=wonderwall+chords+uke', suggesting a lure to a malicious site. The presence of numerous other PDF links points to a link farm strategy, likely to obscure the malicious destination.

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=wonderwall+chords+uke
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/advantages_of_case_study_research_design.pdf
    • https://cdn.shopify.com/s/files/1/0429/4954/2047/files/megubogetokaganofozon.pdf
    • https://cdn.shopify.com/s/files/1/0432/6617/9230/files/sigonuvabonanibavetefe.pdf
    • https://static.usrfiles.com/ugd/b8c837_8ace59331d0748b2875461d6098f44d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_768644d59ef34d0494f8e3463f9bb840.pdf
    • https://static.usrfiles.com/ugd/b8c837_add80f69af7b45b2aad35d6e86247471.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e66fdcf727c4596b36f7747d3006f46.pdf
    • https://static.usrfiles.com/ugd/b8c837_97ea172f50e14b1f8697d727a5854c6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_b50cd9a777fe42f19c748b10e8681b3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_627bd5e6270a411586a7054f928fac01.pdf
    • https://static.usrfiles.com/ugd/b8c837_385a816d43f04ad5b297ef0e801b331a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gipal.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3126/files/vampire_the_masquerade_players_guide_revised.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/65496328326.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_off000053dd.bin
9c5cdd8a999b777c7c54b2f3a6b8333b92d851911e8f7ad4c0bb52f888212a8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53DD 5196 bytes
font_01_sfnt_off00006598.bin
b93b20398f3e5d16fb92df0304edabe72e7f7fbbce3727592755d885b8420be5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6598 10248 bytes

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