Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4f46f548be630d1…

MALICIOUS

PDF

70.7 KB Created: 2020-08-08 09:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a45e1df1d0fbdf4c52a5dcfac1a6a199 SHA-1: f8641354ad567bad46ec7527770796466703046d SHA-256: d4f46f548be630d13bec908c22e00b1aae95c60368ac4f9e0d8dde7c986419db
150 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it links to known malicious redirector infrastructure and functions as a link farm. The embedded URL 'https://ttraff.ru/pify?keyword=beam+column+base+plate+design+lrfd+method.+pdf' is flagged as malicious. The document body, though heavily obfuscated, contains this URL, suggesting the PDF's primary purpose is to redirect users to malicious 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.ru/pify?keyword=beam+column+base+plate+design+lrfd+method.+pdf
    • http://files.maijaranka.com/uploads/1/3/1/4/131437615/robaji_lazuro.pdf
    • http://xirepew.designauthentic.com/uploads/1/3/0/7/130738837/6791755.pdf
    • http://files.mackeiganmarketing.com/uploads/1/3/1/4/131452732/sodopafesub.pdf
    • http://files.elainepolishak.com/uploads/1/3/1/8/131857419/gavov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51108684678.pdf
    • https://cdn.shopify.com/s/files/1/0429/9309/0714/files/22379642489.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/20531283661.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pekuxiwitijumowiviw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/jibojajikeravi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7667/2918/files/muxiwurawereredotesutuxid.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/lolawenogejupan.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/bapid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78682713185.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70339383958.pdf
    • https://cdn.shopify.com/s/files/1/0447/1911/2345/files/power_electronics_projects.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000abb9.bin
7a986cc67e6e535b2cde3b01a0100c929a5cf1c80531f7908e25bb16b6559777		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABB9 5788 bytes
font_01_sfnt_off0000bf04.bin
6545e4e2910701c4535c7debf99b27f9c64b330e5d9e1111502d0386d503ed81		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF04 6220 bytes
font_02_sfnt_off0000ce1a.bin
fc50d7857aec140abaedfc7fb5f9f4fd8ddc298a255851e55eb991d1fc222c15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1A 11600 bytes
font_03_sfnt_off0000f559.bin
55c8669b4502471142deed13cefc928437432b977e29e2bbc035fe747ccacbeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF559 16656 bytes

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