Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5ff24effcbc3c7…

MALICIOUS

PDF

42.2 KB Created: 2020-09-17 05:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02e6bbd8b465b2548701f94c0945b771 SHA-1: f32c8acef03ec4fdd7e6397bf231e311790da8f5 SHA-256: fe5ff24effcbc3c7587621ed0ea431940c0ddb6560f91b0b3ed89c04ec3ddeba
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document also exhibits characteristics of a PDF link farm, with numerous embedded links to other PDF files, potentially for SEO manipulation or to host further malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=yeh+hai+mohabbatein+27th+july+2018+written+update
    • http://zozasipon.acsunrise.org/uploads/1/3/0/7/130776478/povenajod-jiluxogo-fuximejusigova.pdf
    • http://mebinoful.austindiadelosmuertos.org/uploads/1/3/0/9/130969465/gipiritolijo.pdf
    • http://vilak.homerbiology.com/uploads/1/3/1/6/131637291/138650.pdf
    • http://files.drlindagedeon.com/uploads/1/3/0/8/130813095/ruzokovuduxujawuw.pdf
    • http://files.ofiar.org/uploads/1/3/1/8/131856380/27f72542.pdf
    • http://sorudigiw.jrscloset.com/uploads/1/3/1/3/131398589/1141422.pdf
    • http://zijapo.buttonplanet.com/uploads/1/3/1/3/131380344/7765736.pdf
    • https://64e54a28-b9b8-422d-96f8-3384d34efd
    • https://7042973a-4f66-4183-a33b-9cafd1a1436e.filesusr.com/ugd/cfbfd2_98d7eb9fed11446bab476428048956bf.pdf?index=true
    • https://f7b39daf-8f83-42d2-bc40-f49c641c17f8.filesusr.com/ugd/eb6612_696620780b484bf3a4a8562f7ad2d24b.pdf?index=true
    • https://9c013f76-0f14-4f34-8037-f3c474cd2fc1.filesusr.com/ugd/72b0e7_08ee7a3722af47ebbb18ceb29ef74e03.pdf?index=true
    • https://e4409439-8146-40b3-bd74-eb1971459de6.filesusr.com/ugd/286fb8_234d4454a1034f22bbd3b94ebaa08d6d.pdf?index=true
    • https://878da0ba-b8cf-466e-b767-0904e0bf54c4.filesusr.com/ugd/9ced5d_12e56019313b4ede8ed77162d1c19051.pdf?index=true
    • https://259cfbbe-c33f-4ea3-a7a8-1bc5d715af70.filesusr.com/ugd/f51585_f4e680a3ec334ab7886ede83893eb1fc.pdf?index=true
    • https://3613619a-9e2b-4116-8a6c-9199b03038ef.filesusr.com/ugd/3e5d97_4793fc78372a44269e2c55b0703f2bd9.pdf?index=true
    • https://90cb04c8-42c9-4f57-b679-f820b44d7f59.filesusr.com/ugd/96564c_0e3ec38d95ed4bd484469abb7ece4766.pdf?index=true
    • https://f84c539a-369d-47b7-be7a-11d7fe6e460a.filesusr.com/ugd/a07927_c193d9e1646146bfb8b290bd76c99b0b.pdf?index=true
    • https://64e54a28-b9b8-422d-96f8-3384d34efd80.filesusr.com/ugd/bba345_e4063cff57f9494b83c97185d10fde92.pdf?index=true
    • 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_off00006656.bin
b2ad6d7d4f4463889cd777deaf1d1aca71668eae489b996397626d29542b9104		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6656 5992 bytes
font_01_sfnt_off00007ab3.bin
ddc76a73f07f7beb37148640e1acef41c7c13fa53d8d67d75bc357927e7fb40b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB3 9576 bytes

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