Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fae872f25f478d…

MALICIOUS

PDF

41.0 KB Created: 2020-08-20 09:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 530f01f087e6e6c563b07e67932b25e7 SHA-1: c0e3e2304a64d8c3018ce25725373ba376b4528c SHA-256: 44fae872f25f478df4a5f30d925248a04e67cdc334794599349d985c6fc8cf21
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains text related to 'budget spreadsheet to get out of debt' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of many external links, including to Shopify, indicates a link farm strategy to improve search engine ranking for malicious content.

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=budget+spreadsheet+to+get+out+of+debt
    • http://files.synergeticmedia.uk/uploads/1/3/0/7/130775229/4129099.pdf
    • http://xafexe.rockcreekgoldenirish.com/uploads/1/3/2/6/132681763/7781085.pdf
    • http://files.antonthomasart.com/uploads/1/3/0/8/130814861/5938178.pdf
    • https://cdn.shopify.com/s/files/1/0429/6507/4086/files/vofogidalumokekeruseguweg.pdf
    • https://cdn.shopify.com/s/files/1/0437/1261/0457/files/cdc_guidelines_hepatitis_b_dialysis.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/miwasujujame.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1296/files/63535122749.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/55775389103.pdf
    • https://cdn.shopify.com/s/files/1/0446/3765/1107/files/writing_learning_objectives_using_bloom_s_taxonomy.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/torovuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/cemetery_dance_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/ralabidebejolom.pdf
    • https://cdn.shopify.com/s/files/1/0431/6502/4412/files/money_and_barter_system.pdf
    • https://cdn.shopify.com/s/files/1/0439/1924/5467/files/74306511856.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/minecraft_come_alive_1._6._4.pdf
    • https://cdn.shopify.com/s/files/1/0432/4789/4683/files/19553335010.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_off000062c0.bin
e2284602c98bffef73087cceb926bd57019dc759e9d4ebac53a5bbc939661b3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x62C0 5460 bytes
font_01_sfnt_off0000754c.bin
881c7698e4a0be3d03f21ceeab5286c2ca3e6f67f512872bcf5ef3466bef243b
pdf-font-stream PDF embedded font (sfnt) at offset 0x754C 9900 bytes