Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d210c288a340ef…

MALICIOUS

PDF

51.5 KB Created: 2020-08-15 07:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 641180f89c9da9f20c42d571ba7a040d SHA-1: 14c51de406053a5bb9f6a1a7f693e46565e33438 SHA-256: 28d210c288a340ef1b5091b416f571777170c002c43498a3b4747099954c72cd
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to email form submission and includes the malicious URL. Additionally, a heuristic for a PDF link farm was triggered, indicating a large number of outbound links, with the primary one being a Shopify URL.

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.cc/wb?keyword=email%20pdf%20form%20submit%20button
    • http://files.tipsandtrick.7pilar.net/uploads/1/3/2/3/132302759/jakirugi.pdf
    • http://files.ellashannon.com/uploads/1/3/1/4/131412558/runebatuletoli_sopanaf_duxaw_gakuxi.pdf
    • http://files.muscatdogadoption.com/uploads/1/3/0/7/130775612/xukamiveleroj-gowuwaminadiz-noduxuf.pdf
    • http://radazajaz.apparelcolorwork.com/uploads/1/3/0/9/130969368/nuduwimifelonil_ligirujigaro.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/el_paraiso_perdido_milton.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/zufanisanawojuwez.pdf
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/nutakofepudedawi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3772/7637/files/kapafowadagu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5095/0041/files/78065638308.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/game_catalogue_may_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5903401900.pdf
    • https://cdn.shopify.com/s/files/1/0433/5616/0151/files/gakaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/9710/4288/files/wujuwusilegakule.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/cover_letter_pharmacist.pdf
    • https://cdn.shopify.com/s/files/1/0434/3106/7813/files/wezif.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_off00007d98.bin
2b4dbfa37ccc09a655766aef441d67bc016de08d614876b686ce60f7ba1b13b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D98 5284 bytes
font_01_sfnt_off00008f6f.bin
aa10ff4d47bbac56c0e5790542b31b8ce0aabeebf9e8ca2afaf7084b077f3024
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6F 15928 bytes