Malicious PDF — malware analysis report

Static analysis result for SHA-256 95973d75439f5ca4…

MALICIOUS

PDF

37.9 KB Created: 2020-09-05 04:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0170cea0dc7e29ba1c0dfff442ffce94 SHA-1: da7b6b59bd5e3c2e1cd01d1aea9fb6b5290eb546 SHA-256: 95973d75439f5ca4cbe85bf13809c5c672fe18109075995274d145df9d307d13
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.me'. The document body, though heavily obfuscated, contains text related to 'Abct conference poster guidelines' and the malicious URL, suggesting a lure. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. No scripts were extracted from this sample.

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.me/wix?keyword=abct+conference+poster+guidelines
    • https://cdn.shopify.com/s/files/1/0436/3183/7344/files/fozesejezokusixutev.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3880/files/banifidixunoripirupefod.pdf
    • https://cdn.shopify.com/s/files/1/0445/9646/1732/files/26755556855.pdf
    • https://cdn.shopify.com/s/files/1/0434/5813/4168/files/5710688099.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/43659893841.pdf
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/rapapugog.pdf
    • https://cdn.shopify.com/s/files/1/0437/6716/9173/files/biology_chapter_11_introduction_to_genetics.pdf
    • https://cdn.shopify.com/s/files/1/0439/0020/7272/files/xifewiromiza.pdf
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/nogalurajof.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/jaranwala_weather_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9817/files/zupejezajila.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/gerrymandering_challenge_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/2009/1555/files/math_worksheets_free.pdf
    • https://static.usrfiles.com/ugd/cc15ef_2ef438a8dc634755b2ad735a1dce5449.pdf
    • https://static.usrfiles.com/ugd/a13bc2_4d8eba76fb314b9a8d806265b8ef6de1.pdf
    • https://static.usrfiles.com/ugd/fac845_1ab7073ef2fc4693bdff369966084a15.pdf
    • https://static.usrfiles.com/ugd/f1d680_fd0c1bc96bd244388e48a71a766a6b38.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_off00005531.bin
403c2006947a9945eef8d7f27642f8e53045765b4f367bf1583c37dda16e5d93
pdf-font-stream PDF embedded font (sfnt) at offset 0x5531 5240 bytes
font_01_sfnt_off00006718.bin
5e72acc4de8febc48406486d6444b9d542ae0e185b0e6a1b14ebf907294afeae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6718 10444 bytes