Malicious PDF — malware analysis report

Static analysis result for SHA-256 be601bd0630e6d10…

MALICIOUS

PDF

45.2 KB Created: 2020-08-20 22:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9afb2cfa3524ff64e2aeab4ac2562ef8 SHA-1: 63163b66763e1053ada7904877b96641449eacbb SHA-256: be601bd0630e6d10d1cd9a6a7eeff82e9b5110d2f638bbe350a32a235bc29cf1
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links pointing to various PDF files hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=ansys+maxwell++full', is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to lure users to malicious content, likely for phishing or malware distribution.

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.com/pify?keyword=ansys+maxwell++full
    • http://files.localsonlychattanooga.com/uploads/1/3/1/6/131637701/558133.pdf
    • https://cdn.shopify.com/s/files/1/0429/4079/2999/files/abnormality_in_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/adverbs_and_adjectives_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/6224/8095/files/vaburupaditumur.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/jisaranakegowuzifalizub.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/26481341763.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/vezupewesusolatoke.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9280/files/juxoko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/33323554138.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_off000072ae.bin
65829fd8ca10c535258b9d363ebeae35a6d5a3c69670a612adcffca1cc350dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AE 5068 bytes
font_01_sfnt_off000083f1.bin
d5d83169255ceaa5b92bade02e88797e0fc992fbd17adbec39af30c17daaaf19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F1 10364 bytes

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