Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25666c190ee67e1…

MALICIOUS

PDF

49.8 KB Created: 2020-08-16 11:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 811f7ff92abc16043966373c44f968fe SHA-1: 768308791a81c34e38c843ecf8095d52a1a871dc SHA-256: a25666c190ee67e12a346a04493657a2daa8d5611006cf2c8c617cc73733ddb6
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=abdominal+pain+treatment+guidelines'. This indicates the document is designed to lead users to malicious sites. Additionally, a PDF link farm heuristic was triggered, suggesting a large number of outbound links, many of which are hosted on benign Shopify domains but likely serve as a cover for the malicious redirector. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=abdominal+pain+treatment+guidelines
    • http://gesobimuk.thegardensatsancarlos.com/uploads/1/3/1/6/131636648/rekivuworogizezake.pdf
    • http://files.chloescheel.com/uploads/1/3/1/3/131382955/9861738.pdf
    • http://radavare.adamaahrens.com/uploads/1/3/2/3/132303382/1817219.pdf
    • http://logab.travelwithjean.com/uploads/1/3/1/4/131453870/lumojifijil-muxivizaxuwudo-rutaboruzufowap.pdf
    • http://files.sharpeningdoneright.com/uploads/1/3/1/3/131380292/vegula.pdf
    • https://cdn.shopify.com/s/files/1/0435/6715/3313/files/abnormal_psychology_an_integrative_approach_8th_ed.pdf
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/facebook_invite_bot.pdf
    • https://cdn.shopify.com/s/files/1/0434/6655/5557/files/tivinutaxadegunijewu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8167/8494/files/rupowem.pdf
    • https://cdn.shopify.com/s/files/1/0439/2737/1931/files/82860677470.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/nugiloduwakejevot.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/alvo_medical.pdf
    • https://cdn.shopify.com/s/files/1/0428/5965/9420/files/muwat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pidepuwavulosetanujerepub.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0354/files/63294886012.pdf
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/sitagobolotozep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/eclipse_juno_64_bit_zip.pdf
    • https://cdn.shopify.com/s/files/1/0437/3587/5749/files/73003426355.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_off000077d2.bin
888981945d6ba434b788bf35d0cc02d37a4aac4b6a9e66100b09ea9d9c6b090d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D2 5292 bytes
font_01_sfnt_off000089ab.bin
d828f3e154d1572f3275ba262803219eb668c05e5700977a63e8d5e17a9350d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89AB 10012 bytes
font_02_sfnt_off0000abdf.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABDF 4324 bytes

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