Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf3a59f52629c02…

MALICIOUS

PDF

40.7 KB Created: 2020-08-19 19:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d24ab92d560dd6c1f2f49fc71210b7 SHA-1: 0ebea76264d7e0197ca0aa288baaff1a409023c0 SHA-256: baf3a59f52629c02cb7236646d6de564ba0a87d361c60ac020ba582a2f1e037d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The presence of a visible LOLBin command execution instruction suggests an attempt to execute further malicious code. The primary malicious IOC is the redirector URL, which likely leads to a malicious payload.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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/pify?keyword=light+effect+png++hd
    • http://firuj.renewcleaningservice.com/uploads/1/3/1/4/131408854/23e0384.pdf
    • http://xifebi.mindspringhempco.com/uploads/1/3/1/0/131070858/b69b0a202.pdf
    • http://files.lancevictormoore.com/uploads/1/3/2/7/132741334/7240620.pdf
    • http://files.prbydenise.com/uploads/1/3/0/8/130813409/tozakasafifiw.pdf
    • http://dijugu.bgecyclingclub.co.uk/uploads/1/3/1/8/131857090/756980.pdf
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/php_curl_error.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/urticaria_multiforme_images.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/75575430647.pdf
    • https://cdn.shopify.com/s/files/1/0435/3599/0943/files/coenzyme_q10_benefits.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/hacking_tutorials_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/new_jersey_driver_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/bioplastics_from_corn_starch.pdf
    • https://cdn.shopify.com/s/files/1/0462/8132/6752/files/yowhatsapp_apk_latest_version_anti_ban.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/sisito.pdf
    • https://cdn.shopify.com/s/files/1/0463/0786/8834/files/ketumawixado.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059ff.bin
f50f27b43d55db509b8f70f30dceca5666dde17a0d5608bb68ad52bef50472e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x59FF 4844 bytes
font_01_sfnt_off00006a7a.bin
d165ae4d83dd613087195bf72709767423eba952415580ff8d315dee306433fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7A 1728 bytes
font_02_sfnt_off00007315.bin
3a47c65ec9132fd19470cbe0f17dac987ef8dd2e3815319406d9518d69d602a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7315 10228 bytes