Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d50aca1e31e4f0…

MALICIOUS

PDF

70.3 KB Created: 2020-08-21 12:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41d6740a978619ca423d9d23b1706c55 SHA-1: a51809247882093cb81660a08e2d0c9f6722f6cd SHA-256: 22d50aca1e31e4f05d4875b85e6fe1e1e84a6dd55cf7dd316b0331689246eadf
120 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=common+journalistic+reporting+practice'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be social engineering through a deceptive link farm.

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=common+journalistic+reporting+practice
    • http://jawuwi.parakleseos.net/uploads/1/3/0/8/130874207/bovelule.pdf
    • http://rilar.ashavandoyon.com/uploads/1/3/0/8/130813846/jijiwasuxab_gizanek_sepekimimus.pdf
    • http://files.satphones.com/uploads/1/3/1/6/131637658/6932170.pdf
    • http://setagowa.designcycle.co/uploads/1/3/1/3/131379730/zesaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/vmware_pro_key.pdf
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/54786434804.pdf
    • https://cdn.shopify.com/s/files/1/0436/8351/2473/files/amarnath_yatra_2020_registration.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/28807600711.pdf
    • https://cdn.shopify.com/s/files/1/0457/6342/8516/files/35262706698.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/52453900819.pdf
    • https://cdn.shopify.com/s/files/1/0436/0398/4547/files/jemajerut.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3697/files/wovawonetosawufu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3985/7572/files/44185635182.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/kewosevujined.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/kavukuliwurolatika.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_off0000c962.bin
c15872f060454c7f1f4c81746ad98682764b5d4d331cd89bb551cf426453d84d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC962 5236 bytes
font_01_sfnt_off0000db18.bin
959cab75201b51af2d318b10b6a931bc1a810ae86eafe48e950bfa37079b0b41		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB18 15120 bytes

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