Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a7f8402408d9fc…

MALICIOUS

PDF

33.2 KB Created: 2020-08-25 10:09:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47b0e01346c296f1b569350234a66fc1 SHA-1: 3bb9b6c306bb367d91f71f4bdcff94afb7f80c63 SHA-256: 92a7f8402408d9fc8b38cad58a5438d897c348f135090fb6dbd1e227aa231d31
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting an attempt to lure users to malicious content. The presence of numerous external PDF links further supports the SEO poisoning or link farm attack pattern.

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=basshunter+all+i+ever+wanted+mp4
    • http://files.abqcanvasandcoffee.com/uploads/1/3/0/7/130775776/383024.pdf
    • http://gulanased.reikilinetour2009.ca/uploads/1/3/2/6/132682076/lunud_vapolabetizuvub_sifokid.pdf
    • http://jabozi.skar-productions.com/uploads/1/3/1/6/131606000/leludipag.pdf
    • http://files.anjaliyogact.com/uploads/1/3/0/9/130969543/befinikukijixuz_lowidajaxudev_femeti_bapenuje.pdf
    • http://miridabab.kinellarhall.com/uploads/1/3/1/8/131857920/rumapejenizuf-jamixugimema-kasumafaf-voxanupup.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2988/files/wozevozunazuvutew.pdf
    • https://cdn.shopify.com/s/files/1/0435/7727/8623/files/39641349760.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/ripolivokinonafujudilum.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/gafikureramufe.pdf
    • https://cdn.shopify.com/s/files/1/0434/7310/9152/files/78139362534.pdf
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/4950520794.pdf
    • https://cdn.shopify.com/s/files/1/0462/0232/3094/files/carers_allowance_form_dwp.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/the_bang_bang_club_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1447/files/harbor_freight_atv_winch.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0392/files/diet_for_celiac_disease.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_off0000455c.bin
ae26c04601355342595402f121a2d30f81510240ce85ccd0b6043085fb4f0f5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x455C 5488 bytes
font_01_sfnt_off000057e8.bin
ea62d933a3a1eb016f040e1515bbc5d4893c399bbbdfee33b71d5bf32a7f9733		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E8 9368 bytes

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