Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9d3897d0d97dab7…

MALICIOUS

PDF

40.2 KB Created: 2020-08-03 04:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8025c468f3f876378f1971d608615601 SHA-1: 16df8d4d6e351b441a847ffb1f62334751bdd9b8 SHA-256: c9d3897d0d97dab7ab9a264413ee427804a0890ab93dd669a497b78a20f26325
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the target URL. The presence of numerous links, many pointing to Shopify, suggests an attempt to create a link farm for SEO manipulation or to obscure the malicious destination. No scripts were extracted, limiting the analysis of further malicious behavior.

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.com/pify?keyword=mark+henry%2527+s+theme+song
    • http://files.yoursinfashion.com/uploads/1/3/1/3/131379732/4778757.pdf
    • http://files.moore-law-firm.com/uploads/1/3/2/7/132740277/tajadurusizulam.pdf
    • http://files.cubaselloffs.ca/uploads/1/3/0/9/130969659/zenufoladivizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/11636022245.pdf
    • https://cdn.shopify.com/s/files/1/0439/0528/6296/files/romomiruliwoje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45235944591.pdf
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/69181634405.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/vazufuxogoxomidoliliwoti.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/30010510417.pdf
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/gumul.pdf
    • https://cdn.shopify.com/s/files/1/0440/6611/1638/files/minecraft_hunger_games_maps_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7298/7046/files/lagumibasarazoremovuna.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93434530871.pdf
    • https://cdn.shopify.com/s/files/1/0434/0767/1447/files/43231501140.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/webelos_pin_placement_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/kejalutuxutowe.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_off00005f4d.bin
7773c23377b282df7bc23340008bf67c568c0846c394205ef4e31985df1f7d5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4D 5272 bytes
font_01_sfnt_off0000712e.bin
9f4ec6ae9ab5b32e20c995d6c1343381349649effe443de80018762e7bd5b4f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712E 10460 bytes

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