Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ac36e7a1ea0b83…

MALICIOUS

PDF

38.3 KB Created: 2020-08-08 22:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 009e76ea46fb51e3a0fcef588a418c59 SHA-1: b2706fe17989d0e482596ee007e6bcf904422f55 SHA-256: d2ac36e7a1ea0b83661d60bd52edcc792dfb677573d06cdddaf4e5d2aa2fd4b4
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=parkaya+pravesh+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links pointing to various domains, many of which are hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the primary malicious URL, suggesting a lure to external 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.cc/pify?keyword=parkaya+pravesh+pdf
    • http://files.sewaneeconf.com/uploads/1/3/0/7/130738639/jigirojif.pdf
    • http://files.diana-oasis.com/uploads/1/3/0/8/130813639/6408387.pdf
    • http://files.asaswallhangers.com/uploads/1/3/1/8/131857983/747325.pdf
    • http://files.shineeventdesign.com/uploads/1/3/1/4/131453907/8440978.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/91371337214.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/wulukivoniluzujal.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4339/files/gewepilil.pdf
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/inseminacion_artificial_en_alpacas.pdf
    • https://cdn.shopify.com/s/files/1/0437/1628/0469/files/11423119407.pdf
    • https://cdn.shopify.com/s/files/1/0435/0840/0280/files/mugebaronidaduliweromiso.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/wazuwolixogimedipodonawa.pdf
    • https://cdn.shopify.com/s/files/1/0432/1466/7936/files/juwakejexinej.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/10672680252.pdf
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/91591563508.pdf
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/2020_buell_1125r_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/68351183061.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_off000057f4.bin
bd6d5c8883903daef9dbdee29d040361e7ad1e1ed639594f426e83c6a2eec868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57F4 5324 bytes
font_01_sfnt_off00006a16.bin
530f7287d98adb8791ab30565690ca8aefb1297da27c93eec1c713e1c1c463f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A16 10136 bytes

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