Malicious PDF — malware analysis report

Static analysis result for SHA-256 960d87165d54d3e3…

MALICIOUS

PDF

48.7 KB Created: 2020-08-30 19:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af4bef5d8c67cc5252cf502968c1aca2 SHA-1: 4870977ce021443fe03483640173bd2bea0b2351 SHA-256: 960d87165d54d3e3b5ae014413a09965e4a500bc367387d87555f9480f40f814
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is likely used to deliver a secondary payload. The document body and embedded links suggest a lure related to book comprehension questions, a common tactic for social engineering. The presence of numerous SEO-optimized PDF links, many pointing to Shopify domains, indicates a link farm used to obscure the malicious redirector. No scripts were extracted, but the PDF structure and URL analysis strongly suggest a malicious redirection attempt.

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=a+series+of+unfortunate+events+the+bad+beginning+comprehension+questions
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/sapenobosenokawaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/6626/0642/files/lovubaxatopufefazaxot.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3062/files/88833704191.pdf
    • https://cdn.shopify.com/s/files/1/0428/2269/7126/files/aisi_lagi_lagan_javed_ali_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3408/files/andreas_moritz_the_amazing_liver_and_gallbladder_flush.pdf
    • https://static.usrfiles.com/ugd/fac845_3c8afea8c29c497f95ee9ec2707c1c34.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/jeropekuw.pdf
    • https://cdn.shopify.com/s/files/1/0440/1466/5878/files/business_risk_analysis_template_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/zatoxuvibux.pdf
    • https://cdn.shopify.com/s/files/1/0433/9954/4984/files/nuzegudarotunugobosipado.pdf
    • https://cdn.shopify.com/s/files/1/0432/4933/6483/files/senobasotuvujepubojiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0380/4839/files/lazofajomemasinufotan.pdf
    • https://cdn.shopify.com/s/files/1/0433/3925/1870/files/gokidifanetegetalejap.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/dsp_first_2nd_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0160/1444/files/dariwugeraxalevibumate.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_off000070d1.bin
867832173768186c8aa7c9cf9d18aff2ffd0690c4e0a5a6bc4db283a40ba26ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x70D1 5736 bytes
font_01_sfnt_off00008419.bin
d136720ef8c47983320a4420e44be003dd0b62431e20feba4c0acb4102d4e47f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8419 10272 bytes
font_02_sfnt_off0000a723.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA723 4324 bytes