Malicious PDF — malware analysis report

Static analysis result for SHA-256 b884e95c37dfe2fa…

MALICIOUS

PDF

38.0 KB Created: 2020-08-15 01:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 531ef2e30df3a1df1b501b7f18b5d2eb SHA-1: c4e23ab366badb2231e784f192954d9afd4550c6 SHA-256: b884e95c37dfe2fa4de5822fce1ea732a52054689cb99b75de746cf5f1d8a6ae
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious component. The document body contains garbled text and a URL that appears to be the same as the malicious redirector, suggesting an attempt to disguise or deliver malicious content through a lure document.

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/wb?keyword=ap%20panchayat%20raj%20act%201959%20in%20telugu%20pdf
    • http://wojif.pretenation.com/uploads/1/3/1/0/131070420/tosode.pdf
    • http://files.imaginebetter.shop/uploads/1/3/0/7/130775306/57b878.pdf
    • http://nifejinij.wethammockfarm.com/uploads/1/3/1/8/131856177/6270512.pdf
    • https://cdn.shopify.com/s/files/1/0436/3550/7358/files/40000833070.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/parerigulux.pdf
    • https://cdn.shopify.com/s/files/1/0434/9411/3446/files/contract_termination_letter_sample.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/lepajukalekos.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/abroad_times_newspaper.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/ramenerumiwesiwefixuraxo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/godzilla_game_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/4492/9690/files/56579150258.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/falorolelo.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_off00005585.bin
e7eaaa965be9435d21920137d7bf647ab94eb82c349d5ba72c1c6c3d9c326a96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5585 5740 bytes
font_01_sfnt_off0000691e.bin
b998251a3efba50417dde2acad6700064cc139fef430ff2150c8d4b3423ef227		 pdf-font-stream PDF embedded font (sfnt) at offset 0x691E 9992 bytes

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