Malicious PDF — malware analysis report

Static analysis result for SHA-256 3284f71de933fd50…

MALICIOUS

PDF

50.6 KB Created: 2020-09-02 02:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 911aa06eaff78da13ddd3edda7c55118 SHA-1: 19ba60ecab4e71aa5d4e32fe0486a077cd743773 SHA-256: 3284f71de933fd508dba168a009b2b9bdacf86be12177552d4f758c2c3204ccc
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=hunger+games+catching+fire+audiobook+free'. This URL is presented within the document body as a lure for a free audiobook. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to benign Shopify domains, but the primary redirector is malicious. No scripts were extracted from this sample.

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=hunger+games+catching+fire+audiobook+free
    • https://static.usrfi
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/8_man_bracket.pdf
    • https://cdn.shopify.com/s/files/1/0431/2688/2471/files/tesexe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93016620893.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/causes_of_unemployment_in_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0429/8817/5513/files/lijupig.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/45054965328.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/tesivubarafilukekegom.pdf
    • https://cdn.shopify.com/s/files/1/0438/0616/3105/files/java_person_class.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/wizekebalusakanopogobaz.pdf
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/desh_bhakti_song_video_pagalworld.pdf
    • https://static.usrfiles.com/ugd/4b68be_de0f182ed0204f2bbc638190a9214f28.pdf
    • https://static.usrfiles.com/ugd/3649d2_e72ca1b9992243e58c52f1dec95c0e2c.pdf
    • https://static.usrfiles.com/ugd/df73ab_3b8dba84ecc54cc08d7095b7d1683b2f.pdf
    • https://static.usrfiles.com/ugd/21a131_73d658ab3ed547b88731ed48ca5ec046.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000789b.bin
2eada2f66b1058b09739a8d2bfc479f67ad6cfb1fb8224995fb069188a06c5a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x789B 5452 bytes
font_01_sfnt_off00008aef.bin
0aa1f890d5618338f397a86a97b2c5bd45f22ac199ced01344f1afdf93f05345		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEF 10412 bytes
font_02_sfnt_off0000ae9b.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE9B 4324 bytes

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