Malicious PDF — malware analysis report

Static analysis result for SHA-256 41099dcb8424bd1d…

MALICIOUS

PDF

39.7 KB Created: 2020-07-19 18:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5abafafb4a05e79606e15b2387bc5eb3 SHA-1: 72429734de449d1a91e785d48139b6b42fa82dbf SHA-256: 41099dcb8424bd1d3e459f31d7c478be4e2d1f0e52103325cf4ff08bc1ad068f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

This PDF document functions as a link farm, directing users to numerous external websites under the guise of providing information related to 'atomic structure questions answers for neet pdf'. The primary URL, https://ttraff.ru/wb?keyword=atomic%20structure%20questions%20answers%20for%20neet%20pdf, is identified as a malicious redirector, indicating a clear intent to lead users to harmful content. The document's structure and the presence of multiple outbound links strongly suggest a phishing or malicious redirection attack.

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.ru/wb?keyword=atomic%20structure%20questions%20answers%20for%20neet%20pdf
    • http://files.berkshire-epc.co.uk/uploads/1/3/0/8/130873979/nosufokawifiv.pdf
    • http://files.mandokidslearning.com/uploads/1/3/1/3/131380870/linufike-dosumofati-vuratekodakuf.pdf
    • http://files.greencoreelectric.com/uploads/1/3/2/6/132681392/6393879.pdf
    • http://files.atelierbe.com/uploads/1/3/0/7/130739596/8227cb1c60082.pdf
    • http://files.happenstancebordercollies.com/uploads/1/3/0/7/130739558/xibagamibexojev.pdf
    • http://files.reneesgourmetpizzeria.net/uploads/1/3/2/3/132302848/42d904a6a35282.pdf
    • http://files.calibrebeer.com/uploads/1/3/2/6/132696171/1468570.pdf
    • http://files.northshorerhythmics.com/uploads/1/3/2/6/132695714/5442721.pdf
    • http://files.calibrebeer.com/uploads/1/3/2/6/132696171/146
    • https://gopixur221482700.files.wordpress.com/2020/07/72837807062.pdf
    • https://gepuguxiro.files.wordpress.com/2020/06/94218870256.pdf
    • https://xudevibe.files.wordpress.com/2020/06/52011397944.pdf
    • https://zitexop.files.wordpress.com/2020/07/42627561067.pdf
    • https://wubatelevad.files.wordpress.com/2020/06/ganogaxukebo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4178/2946/files/97082287689.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/61886161689.pdf
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/56663611543.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6175/5547/files/87164876941.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/zumijizofolamovekej.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_off00005cd1.bin
7daa319472d6c081fa1b1d089e5dc2f1629fb3bf10bd5e246118d7ff35694adc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD1 5356 bytes
font_01_sfnt_off00006efe.bin
904ddd47820da89e66897b89219c65eedb7e62e321b495135b6ba5420831833e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 10016 bytes