Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cd34690714d6472…

MALICIOUS

PDF

66.8 KB Created: 2020-09-01 01:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48e47c440ddc97861b594f56fcf9c718 SHA-1: b091f1de1ab584014def54eb0edda5413c6c6dfc SHA-256: 8cd34690714d6472ecd534bcfe94f77f44f5cf3ac4addc68fc6d41e72bb17a64
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing 'human psychology 101 book pdf' and the malicious URL, suggesting a lure to trick users into clicking the link under the guise of downloading a book.

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=human+psychology+101+book+pdf
    • https://static.usrfiles.com/ugd/b8c837_c79c3b56b2d8456cb416a272aa5cb81e.pdf
    • https://static.usrfiles.com/ugd/b8c837_557587f7006f40a0a4d94759a416b77f.pdf
    • https://static.usrfiles.com/ugd/87a178_0882e5def4ff44b9a96db70a385cd619.pdf
    • https://static.usrfiles.com/ugd/10e3af_45890ae4b0454c21b08ccf41c039b19a.pdf
    • https://cdn.shopify.com/s/files/1/0429/6110/9155/files/kisosexugekiweja.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/39602130239.pdf
    • https://cdn.shopify.com/s/files/1/0444/2020/2663/files/el_wendigo_algernon_blackwood.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/gepenejupuposeparotil.pdf
    • https://static.usrfiles.com/ugd/c0b427_6c73c6536931456c862a84656b57c10c.pdf
    • https://static.usrfiles.com/ugd/09273f_85550979f10344fb92f1cd450ecc1f0c.pdf
    • https://static.usrfiles.com/ugd/fac845_9d0e76c639ff42ea863e8eca879db748.pdf
    • https://static.usrfiles.com/ugd/04c368_9c517b4a6fda465da3938f222df59b1e.pdf
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/vegorimaxalemoxiwebafuku.pdf
    • https://cdn.shopify.com/s/files/1/0437/4652/5338/files/37892883804.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/23440249756.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/74794264520.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.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_off0000c67b.bin
ccbd5cd6f1853e742311e1b109494f38d94659d8e21dfe133f70a26cdd314c2e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC67B 5932 bytes
font_01_sfnt_off0000da91.bin
823471337bf317e0de05c05a9952a5f7f6704474d42505c9dae54c2d530b99ac
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA91 10292 bytes