Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc767363dd24319…

MALICIOUS

PDF

49.1 KB Created: 2020-08-08 17:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 984c8aa3085f50b23038842aaab549e6 SHA-1: 0f3fb2a3c16d0cb82d82ad588788fbd01fac1e4c SHA-256: 9cc767363dd243197057c4ca1f4ec18c63889f05e550859e3227718aec223f4a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=command+prompt+tricks+windows+7+pdf`. Additionally, the document body contains instructions that lure the user into executing commands, likely to facilitate further compromise. The presence of numerous embedded links, many pointing to Shopify domains, suggests a link farm SEO tactic to improve search engine ranking for malicious content.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=command+prompt+tricks+windows+7+pdf
    • http://files.mycanaan.org/uploads/1/3/1/4/131454304/mubekedoworopawi.pdf
    • http://files.thebeautybarnuk.com/uploads/1/3/1/8/131856134/wafedukasi.pdf
    • http://files.cheerbowexpress.com/uploads/1/3/0/7/130739081/sufoputuxanenurekon.pdf
    • http://bafibewoj.cognitiverehabilitation.org/uploads/1/3/2/7/132740541/puvumixoge.pdf
    • http://files.fhhschoir.com/uploads/1/3/1/4/131437513/4955769.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/basic_english_grammar_book_1_saddleback.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/35853451265.pdf
    • https://cdn.shopify.com/s/files/1/0440/1748/3934/files/37486581239.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/aashto_bridge_design_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/pathophysiology_of_acute_diarrhea.pdf
    • https://cdn.shopify.com/s/files/1/0447/2619/0234/files/case_xx_knives_value.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/lanilemisevazu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/tom_petty_discography_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/paychex_employee_information_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/14853901327.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/bootstrap_mega_menu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1832/files/92612820834.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/9276271384.pdf
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/4194776173.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_off000072c1.bin
935d30cd06df7f06116ff421888c639d743547fd23183fca6a7510d2367553fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C1 5200 bytes
font_01_sfnt_off0000846a.bin
7258eee3bc83b3264510c047b8d71fa0675f007ff6d8fcdddf98a28cc950f0fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x846A 10832 bytes
font_02_sfnt_off0000a95a.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA95A 4324 bytes