Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a55ff4dbb41e8c0…

MALICIOUS

PDF

57.4 KB Created: 2020-09-12 19:49:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad633e7929410de8f9318564a288cd48 SHA-1: 1bbbb581a87431e5d861a4a3b30644358e88b2ad SHA-256: 1a55ff4dbb41e8c0365cd9fdf045bb1cd71057b87469fc36ffd53507d767b56c
150 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. The primary link, 'https://ttraff.me/wix?keyword=tes+online+craft+trifling+glyph+of+health', is identified as a malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, with many URLs pointing to external PDF files, such as 'http://wuwuzuw.landslidevape.com/uploads/1/3/1/4/131438405/3761240.pdf', suggesting an attempt to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=tes+online+craft+trifling+glyph+of+health
    • http://wuwuzuw.landslidevape.com/uploads/1/3/1/4/131438405/3761240.pdf
    • http://files.10000wordsphotography.com/uploads/1/3/1/8/131856991/gumoxu-xifeti.pdf
    • http://mujum.chsapbiology.com/uploads/1/3/1/3/131383841/riwaledotovov.pdf
    • http://selerijax.rtchattanooga.org/uploads/1/3/2/6/132682787/raxepinagunolidovez.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1513/files/lowering_cholesterol_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/24478258193.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/11395825066.pdf
    • https://cdn.shopify.com/s/files/1/0434/0813/0197/files/87104715077.pdf
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/dirurubeta.pdf
    • https://cdn.shopify.com/s/files/1/0440/6666/8694/files/76548448805.pdf
    • https://cdn.shopify.com/s/files/1/0462/9014/1344/files/dulilopitalapow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/pesaje.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/factoring_quadratics_worksheet_7.pdf
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/69104786168.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_off00009904.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9904 2828 bytes
font_01_sfnt_off0000a2ff.bin
2bb52e62b83eeb2953d0809340aa1005a57c353b3b24259e71dec390eb8a19c5
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2FF 5328 bytes
font_02_sfnt_off0000b525.bin
0e3d7bf7bc15afdf55aab4707611bceace3c8dbab0dfebfce2f6c7b7ed4e6be3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB525 10256 bytes