Malicious PDF — malware analysis report

Static analysis result for SHA-256 b88293ca703623e3…

MALICIOUS

PDF

46.1 KB Created: 2020-08-24 05:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8104a76fd9989e4468d6b666fcd2d316 SHA-1: 4ec3d5c6048c2d2a7c06fd253012a8bc1c825e85 SHA-256: b88293ca703623e3882a226428aa7f577a6fc905297757b8694d88f794ca1e64
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=anta+sports+products+limited+annual+report'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, many of which point to Shopify domains hosting other PDFs. The document body, though partially corrupted, contains text related to an 'Anta sports products limited annual report', suggesting a lure to disguise the malicious intent. The primary malicious URL is the most critical IOC.

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=anta+sports+products+limited+annual+report
    • http://jidotekiw.brandynacole.com/uploads/1/3/0/7/130738732/rewixusudunazi-nisiti-fumebugu.pdf
    • http://files.prime-peak.com/uploads/1/3/0/9/130969474/559e900d481e9.pdf
    • http://fufoniga.womenmakingascene.com/uploads/1/3/2/6/132682897/lafebinogobav-vuzow.pdf
    • http://tobujote.reynoldsyachts.net/uploads/1/3/0/7/130775768/b439a6454258dd2.pdf
    • http://gosaj.nenagholympic.com/uploads/1/3/2/8/132814975/filupubavefunase.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/xasag.pdf
    • https://cdn.shopify.com/s/files/1/0433/7349/4430/files/82106373113.pdf
    • https://cdn.shopify.com/s/files/1/0431/9697/3205/files/cebu_travel_guide_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/xixesatezaraxivarukoripux.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/93818400833.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/bedojapoku.pdf
    • https://cdn.shopify.com/s/files/1/0428/5385/9494/files/anglo_norman_period_notes.pdf
    • https://cdn.shopify.com/s/files/1/0449/4236/0744/files/angry_birds_transformers_colouring_pages_to_print.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/demultiplexing_of_address_and_data_bus_in_8085.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/87654861022.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_off0000773c.bin
3cb3820bb9cb7185461482b9dc685343854fd5e705439b61a791a130a49c168a
pdf-font-stream PDF embedded font (sfnt) at offset 0x773C 5208 bytes
font_01_sfnt_off000088cc.bin
a1bf32b7be62c0bca117063b3647516c8f62a74fd85743168eaf9b1be3991b9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x88CC 10088 bytes