Malicious PDF — malware analysis report

Static analysis result for SHA-256 252050303375c04b…

MALICIOUS

PDF

40.9 KB Created: 2020-08-06 07:02:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec78d66a8fc1c4fe44b032c1a2bdf76f SHA-1: 0062178f6619f568960dd13e5c14d64af9e9b364 SHA-256: 252050303375c04bd8da2baedcad5c1e5a407fcd418cac7b445c0a25f6405beb
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=epfo+kyc+form+pdf'. This URL is presented within the document body, disguised as a link to an 'epfo kyc form pdf'. The PDF also contains a large number of embedded external links, many hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=epfo+kyc+form+pdf
    • http://files.jacktaylorphillips.com/uploads/1/3/0/8/130874599/760be0591.pdf
    • http://files.rabbiklein.com/uploads/1/3/0/7/130738534/karavididujal-mukawimaxumekax-genawada-munovine.pdf
    • http://files.alexandradeviveiros.com/uploads/1/3/1/0/131070331/7593914.pdf
    • http://files.ginnyleehomes.com/uploads/1/3/1/8/131871622/5409955.pdf
    • http://files.lachongsd.org/uploads/1/3/0/8/130874317/e9607386.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/fanijo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/45638809660.pdf
    • https://cdn.shopify.com/s/files/1/0447/3035/1770/files/difference_between_isotonic_and_isometric_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/rewuboxizipusujokipavugef.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/6.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/69169448561.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/wepalabolivagumef.pdf
    • https://cdn.shopify.com/s/files/1/0434/2910/1735/files/ion_profile_pro.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6952/files/38525746318.pdf
    • https://cdn.shopify.com/s/files/1/0432/3164/1767/files/muzatalawejexid.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/99098523877.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/dofuxi.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_off000061f1.bin
3b429274d61c5cf6b5b7232640da8ab4f877c8bcf417bed0e55e403440b160df
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F1 5004 bytes
font_01_sfnt_off000072f7.bin
e5d0c181f06724c998023380837d89653da664f803c7b35e394d5ec943afe7eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 10568 bytes