Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0e49ffb66d9093…

MALICIOUS

PDF

32.8 KB Created: 2020-08-08 21:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81f1ce919691b8675b67b56d9b68dabf SHA-1: 011c5996fa1b73956113c2ca0da9aed431b47a2b SHA-256: 1a0e49ffb66d90931974be1c205a8d6930c6dbf43b2db69be236742febb54c11
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=introduction+to+logic+copi+pdf+download', which is a known malicious redirector. The presence of numerous other links to external PDFs suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. The primary attack vector is likely social engineering via a deceptive link.

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=introduction+to+logic+copi+pdf+download
    • http://files.boydenschoolpac.com/uploads/1/3/0/7/130775475/matif.pdf
    • http://files.niakohimura.com/uploads/1/3/0/7/130776220/pogapenub-sepupefedugu-pabafi.pdf
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdf
    • https://cdn.shopify.com/s/files/1/0446/5518/1987/files/general_ecology_hrl.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/furupokexopaxabisovijuwu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/kiwasujuxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/rawovasadejuwameb.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/asterisk_war_light_novel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/warframe_elite_arid_lancer.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdf
    • https://cdn.shopify.com/s/files/1/0434/6822/6725/files/multiplication_word_problems_worksheets_for_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1703/files/berlin_subway_map.pdf
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/nakosamazirezevopata.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/26758831897.pdf
    • https://cdn.shopify.com/s/files/1/0433/8099/8302/files/addendum_to_renew_or_extend_lease_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0432/9930/7678/files/631818045.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_off000044b8.bin
1719740f523e4b48562ae68e310f060d074daf61036a34a816e0c4c359af2bb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x44B8 5172 bytes
font_01_sfnt_off00005675.bin
766e84579ab6b95be82890800bb7657922e4a2462029a7f150238b88434e10ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x5675 8760 bytes