Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeed1db23ffe15e0…

MALICIOUS

PDF

42.4 KB Created: 2020-08-30 00:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e640ac3e606ec803dea3bbae57ee7a1 SHA-1: 16275a52c33df147f28b0324d8b2825b2bd6952e SHA-256: eeed1db23ffe15e0d270d9359b303ddea0ce70b2167c7b5dfed8e0e46f8f969a
120 Risk Score

Malware Insights

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

The PDF file contains a prominent link to 'ttraff.ru', which is flagged as a malicious redirector. The document body, though partially garbled, includes the text '11 x 17 inch graph paper' and the URL, suggesting a lure to disguise the malicious link. The file also contains a large number of embedded links to 'static.usrfiles.com', indicating a potential link farm or SEO manipulation tactic to obscure the primary malicious destination.

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/wix?keyword=11+x+17+inch+graph+paper
    • https://static.usrfiles.com/ugd/b8c837_e21ac01d42b1456f88727182eb37006b.pdf
    • https://static.usrfiles.com/ugd/544c7e_d9c13ad0b7e34b3fad79af2bcd1ff8d1.pdf
    • https://static.usrfiles.com/ugd/0df15e_9674b8c4e4dd4b1a88285b508dc17948.pdf
    • https://static.usrfiles.com/ugd/cdb50c_31eda7f13a9c47d2b4e437b782fe1c0c.pdf
    • https://static.usrfiles.com/ugd/0049ca_7808a76d5aac461f9740e01a591e8d8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_de27bb6799ad459982c9868d9d06c784.pdf
    • https://static.usrfiles.com/ugd/19103d_f3e5a4e5667648a885dd2675a9c4d289.pdf
    • https://static.usrfiles.com/ugd/544c7e_b784dc905c214f2fa04cbbf19f39581a.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_18c170b9f40e4b0fb261368de8187aac.pdf
    • https://static.usrfiles.com/ugd/ca32a8_a75d80bf07714ce68acb3c9ccf33057c.pdf
    • https://cdn.shopify.com/s/files/1/0429/5180/3033/files/wavegovamulofebijufimifok.pdf
    • https://cdn.shopify.com/s/files/1/0436/4913/8846/files/wujewafifagabudepejigufi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7184/0161/files/bruises_lewis_capaldi_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/6313/9733/files/gta_5_money_cheat_pc.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/internship_report_in_finance.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3097/files/nojisadesozopozulavifomu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/wisiw.pdf
    • https://cdn.shopify.com/s/files/1/0444/3914/2566/files/shayari_photo_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/3038/0698/files/87686130916.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48465164240.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_off000067ea.bin
bea9a5cf18a9012ffb814d1ab9fc8a77691d07a917be5a7b1918179270cfdf96
pdf-font-stream PDF embedded font (sfnt) at offset 0x67EA 5092 bytes
font_01_sfnt_off00007933.bin
728e2958b94cc999f7197fcae2092e2cfa353ea3d0e6e7aeedac1a65671b1c16
pdf-font-stream PDF embedded font (sfnt) at offset 0x7933 10416 bytes