Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb0eea0d603019c…

MALICIOUS

PDF

45.4 KB Created: 2020-07-30 17:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ccbfe2d5fc43421f24d4132a64b98e1 SHA-1: 4e198e758b4cba4bca80e7e137cecb571994cc9e SHA-256: 3eb0eea0d603019cac36af854bb1ffd3f19ba17be2cfd4184c2b0b30fe0d5f5e
152 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 pointing to 'ttraff.cc'. This indicates the document is designed to redirect users to potentially harmful websites. The presence of a large number of embedded external PDF links, many hosted on Shopify, suggests an attempt to manipulate search engine results or distribute content through a seemingly legitimate platform. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=solution+of+bullying+pdf
    • http://files.duganspecialties.com/uploads/1/3/0/7/130738875/48dd6414e2.pdf
    • http://files.truplans.net/uploads/1/3/1/3/131384660/2305946.pdf
    • http://files.belenartleague.com/uploads/1/3/0/7/130739924/gekufezadabifoko.pdf
    • http://files.belenartleague.com/uploads/1/3/0/7/130739
    • https://cdn.shopify.com/s/files/1/0432/7990/9017/files/42665214160.pdf
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/tedoju.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/witonetowetefa.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/jodudaxenifabun.pdf
    • https://cdn.shopify.com/s/files/1/0432/1057/1940/files/jatojo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xefafozerokadugatevaru.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/95525782292.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/duwaxufezemurogagur.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/wagifaxoxabitisisowatun.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4641/files/70424661325.pdf
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/wedozagojavarolopewor.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5842/files/zorenajetizuxeriz.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_off0000761a.bin
30c86642fb49ce38d3acf0497ebf9775e5db2c2085bdcf6a30cf3463b83b7e0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x761A 4832 bytes
font_01_sfnt_off00008692.bin
5a0757aa61d2fd003aa89ffa528eb8aca46539ae7eec1d11c132e79fbf852bd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8692 9960 bytes