Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a595d9f0a9cce2e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-18 22:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 624755db46fa7a6914b9f73a8b6fcfc9 SHA-1: 32313a05c584451febd3b59a99bd0b606789f148 SHA-256: 7a595d9f0a9cce2e47fde3e763e663db02c316783d6724dc988f62018bb3f2aa
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm hosted on Shopify. One prominent link redirects to a malicious URL, ttraff.ru, which is likely used to distribute further malware or phishing content. The document body itself is heavily obfuscated but contains the malicious URL, indicating an attempt to disguise the malicious intent. The presence of multiple external links suggests a strategy to evade detection and potentially lead users to a variety of malicious sites.

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/pify?keyword=gastroenteritis+pada+anak+adalah+pdf
    • http://files.rivrvuefarmnranch.com/uploads/1/3/1/4/131407705/572b8d994499cf1.pdf
    • http://files.carpetcleaningrestorationmarketing.com/uploads/1/3/0/7/130775659/fegaxejejokixagim.pdf
    • http://files.thesightsoundgroup.com/uploads/1/3/1/8/131856937/96c7f67411326.pdf
    • http://vexaridef.breathlifeministries.com/uploads/1/3/2/6/132681488/nogoxuxunoli-nitedifagez-rogogofedejuf.pdf
    • http://files.katiemachain.com/uploads/1/3/1/4/131455283/57a787ca629.pdf
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/vujataruduzotupud.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/jajixulebizufonotu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6340/1877/files/anatomy_and_physiology_coloring_workbook_chapter_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2506/files/bach_fugue_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/mifitumuwodasutizuwanov.pdf
    • https://cdn.shopify.com/s/files/1/0434/3060/9063/files/pdf_quant_job_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/46166698651.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/tatowuwefijikesiwaz.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/90780706183.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/fakemiwu.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_off00006310.bin
615d2377cecad490c3974ea4e34cf29b3b2c91df726d8b4743c7291421b0996d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6310 5012 bytes
font_01_sfnt_off00007410.bin
7031c94286909cf2f2b01c062029a970b4c6c221d361670f441c088eb52ae2ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x7410 9780 bytes
font_02_sfnt_off00009576.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9576 4324 bytes