Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48c434565e5eeeb…

MALICIOUS

PDF

43.8 KB Created: 2020-08-17 10:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7597b3ee3354353ba05165336a62e23f SHA-1: 58c44e409150d881293d22055d6f6e2a8b62a1c3 SHA-256: e48c434565e5eeeb5cc8821bc5ca917dff79594b5c7c6a6f1ecaa41c42cb4ab5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to external resources, which is indicative of a link farm or SEO manipulation tactic. One critical heuristic identified a malicious redirector link to 'https://ttraff.ru/pify?keyword=report+table+of+contents+latex', suggesting an attempt to lead users to malicious content. The document body, though partially corrupted, also contains this URL and references a 'report table of contents latex', reinforcing the lure. The presence of numerous Shopify-hosted PDF links, while many are benign, contributes to the overall link farm characteristic.

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=report+table+of+contents+latex
    • http://narebone.beatrizguzmanvelasquez.com/uploads/1/3/1/3/131383309/megokuda.pdf
    • http://files.stephengatt.com/uploads/1/3/0/9/130969984/dodukonejuxuv.pdf
    • http://files.mountainvilleumc.com/uploads/1/3/2/8/132814791/debifaxufem-tuzubopo-lemogo.pdf
    • http://files.makingsiliconebabies.com/uploads/1/3/0/7/130739069/besirukin.pdf
    • http://files.pmd-geoffbarker.com.au/uploads/1/3/1/3/131380322/16137d501e4f1.pdf
    • https://cdn.shopify.com/s/files/1/0432/2535/0301/files/34624016804.pdf
    • https://cdn.shopify.com/s/files/1/0433/2204/8667/files/academic_vocabulary_use.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/71924070011.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5372/files/38851665894.pdf
    • https://cdn.shopify.com/s/files/1/0434/1609/2828/files/transformers_bumblebee_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/kaxakefi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9162/3074/files/pugesuxinesanepup.pdf
    • https://cdn.shopify.com/s/files/1/0437/1772/2280/files/discord_italic_text.pdf
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/wigarazududumipafamuxod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005efe.bin
e76a026b725b949f353f3a810e54699b931f22ee96fac08e2827711a14d9f951
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFE 4964 bytes
font_01_sfnt_off00006fe8.bin
af4229d5b20f308b64c0db23196b5dd96ad1ff1f1a5276ff3b43e89e3671a07a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE8 10592 bytes
font_02_sfnt_off000093ed.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x93ED 4324 bytes