Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c564dd54d94022…

MALICIOUS

PDF

54.2 KB Created: 2020-08-16 01:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 447a2b56627e4d281188563adcad51be SHA-1: b935396eb61e8d362d5c2534dd059abe5394224f SHA-256: 08c564dd54d94022ac0c57526110f08d11b0aac81a332483c6caa14eb76821b7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains but are likely part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains references to the Renault manual and the malicious URL, suggesting a lure to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wb?keyword=renault%20megane%20scenic%202005%20manual%20pdf
    • http://files.lisamedoffdesigns.com/uploads/1/3/0/9/130969313/c5fe39b8e02.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/4098/7544/files/zudinejovuwofelexuvuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/human_psychology_101_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/phr_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/vufolazodatupadi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pazutorigixasozesilax.pdf
    • https://cdn.shopify.com/s/files/1/0435/6712/0539/files/teatv_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5126/files/dumepawivetisap.pdf
    • https://cdn.shopify.com/s/files/1/0437/2925/6602/files/gba_ags_101.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5961/7690/files/53319540908.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007232.bin
2ad50c68d987d8cf95e13c64395da5689670b225bbd4cd06bf248bbf6afa1495
pdf-font-stream PDF embedded font (sfnt) at offset 0x7232 5784 bytes
font_01_sfnt_off000085dc.bin
61b248fbd0b81352745f0e6509c34671378314236efe260ebac971631e89d459
pdf-font-stream PDF embedded font (sfnt) at offset 0x85DC 16176 bytes
font_02_sfnt_off0000b4ea.bin
d9b012042df5fe8dc074c42eae0f7627b15178249d85eb70dc7afc452d134ec7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB4EA 16132 bytes