Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d47a3320fb364d5…

MALICIOUS

PDF

43.3 KB Created: 2020-09-01 17:57:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5152f040e7039d4ad70bc2635b2337a4 SHA-1: 1a99f06db7d16dcfb1fa69fc379503a457f8f340 SHA-256: 1d47a3320fb364d5cb2050e2a5435206d30f0547748e3344599d92e4de290abe
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=capella+stroller+instruction+manual'. This URL is presented within the document body, disguised as a stroller instruction manual, to lure users into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign but serve to obscure the malicious one. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=capella+stroller+instruction+manual
    • https://static.usrfiles.com/ugd/cc14e4_531f5a77581240d5870b6745d90d4376.pdf
    • https://static.usrfiles.com/ugd/b8c837_563bce6c44624919b8f09561690b991b.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdcfd85f4cf94ac19686e48e7022ee2b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad9b7eca1d5d4f16910e91a2682076e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_50f6211c317440199d0a1933d8024b7f.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/botulismo_en_lactantes.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/seranopafi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3698/0886/files/zejalesalujexolozuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/harley_davidson_sportster_883_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0919/files/pagavefexedexonav.pdf
    • https://cdn.shopify.com/s/files/1/0448/2826/2560/files/mt_state_abbreviation.pdf
    • https://cdn.shopify.com/s/files/1/0437/6716/9173/files/six_levels_of_bloom_s_taxonomy.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054d0.bin
430142832185192cd8d3a161d20dcbc00a01dae30cc71a8508a4eb2729cecbe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54D0 4984 bytes
font_01_sfnt_off000065a9.bin
33c56740d3ca61f9866a8f4460d6712186b9176c8219f1cca63462ef3a73a72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A9 11104 bytes
font_02_sfnt_off00008bb4.bin
9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB4 16036 bytes

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