Malicious PDF — malware analysis report

Static analysis result for SHA-256 485d410430fedb54…

MALICIOUS

PDF

47.7 KB Created: 2020-07-30 21:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5023100934a8561186ca738e5f65d81 SHA-1: fbb3800d384ce63dd6d80e5c44a27329288108cc SHA-256: 485d410430fedb54fbc1c715a6e82ac019a8f043bbb11ef334b449791cf3ee25
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, which points to 'ttraff.cc'. This URL is likely used to redirect the user to a malicious site or download further malware. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic to increase visibility. The ML classifier strongly flagged this PDF as malicious.

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=bcd+to+seven+segment+decoder+pdf
    • http://files.maplerunaussies.com/uploads/1/3/1/3/131384660/simowemexup.pdf
    • http://files.juliebakerconsultancy.com/uploads/1/3/0/8/130813100/70d42a49e674.pdf
    • http://files.mveanow.org/uploads/1/3/1/8/131871740/wizad-berufituxo-xojog.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0437/0356/6486/files/35649502991.pdf
    • https://cdn.shopify.com/s/files/1/0432/5913/4112/files/sekolopozegokif.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1510/files/zobipomukofor.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/xulasarefexi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/kerakukogevininezakomaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/tinonotivajaxikutowatip.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/70244947416.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/vureteraxavowevigamuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/35505027482.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zorosibal.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/39461364393.pdf
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/71769503850.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_off00007d10.bin
95254878ea179da11e96d99c7a561968aa0a2ef44c0dc35f9f1a5454abc9d9fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D10 5084 bytes
font_01_sfnt_off00008e3e.bin
8a78c7df3c099a52de4f4cadace51b2ab7ee2ebbec4db5a43caf8fff156acdce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3E 10416 bytes

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