Malicious PDF — malware analysis report

Static analysis result for SHA-256 917880c1fba09fb6…

MALICIOUS

PDF

42.1 KB Created: 2020-09-11 00:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6319bbc741892e05d69c9d35cb32d185 SHA-1: 4f2562c14f7bcee1588e5b9a3e0d603beafc5951 SHA-256: 917880c1fba09fb68137232228b4b0195f009ed2052dfe2c10fb6d4894e2a499
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, specifically pointing to 'https://ttraff.me/wix?keyword=guided+reading+activity+8-+1+government'. This URL is presented within the document body, suggesting a social engineering lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious IOC is the redirector URL, which is likely used to lead the user to a malicious site.

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.me/wix?keyword=guided+reading+activity+8-+1+government
    • https://cdn.shopify.com/s/files/1/0469/4484/5985/files/27372802675.pdf
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/32466290388.pdf
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/renironipuwoguxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/revumaxobujarex.pdf
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/pobifuxofodepokirin.pdf
    • https://static.usrfiles.com/ugd/c6ac46_3269c6acc6c0411588270bb243728b24.pdf
    • https://static.usrfiles.com/ugd/108936_4c118c254357469192e6496a4c9be441.pdf
    • https://static.usrfiles.com/ugd/c0b427_7ecc069dc1cf42c9b1677e89dfc0a8dd.pdf
    • https://static.usrfiles.com/ugd/0c4177_dfdd108714cd44e2840376e92ff4b0f6.pdf
    • https://static.usrfiles.com/ugd/6240f8_5a4dc563ab474b4dbecb6b7e53e80ef5.pdf
    • https://cdn.shopify.com/s/files/1/0434/5656/1318/files/26093382105.pdf
    • https://cdn.shopify.com/s/files/1/0465/5372/7126/files/yamaha_warrior_350_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/game_saint_seiya_awakening_mod.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/wifesa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/rokowilijefovawafovumumej.pdf
    • https://cdn.shopify.com/s/files/1/0434/6344/2598/files/does_blackberry_classic_run_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/0509/9675/files/vetewuvuvavevuxomuro.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/30959571193.pdf
    • https://cdn.shopify.com/s/files/1/0430/3385/4103/files/coplanar_waveguide_pcb_calculator.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_off000056b8.bin
fb1f22246eeb503c026cb112f9893b93fa0a3449aca046e9cb2a94fee13af751
pdf-font-stream PDF embedded font (sfnt) at offset 0x56B8 5404 bytes
font_01_sfnt_off00006916.bin
9ed7649ec4907526fc7cfb10f4eaa50381774db2577efaa4b4255d4f5b7d4c88
pdf-font-stream PDF embedded font (sfnt) at offset 0x6916 10668 bytes
font_02_sfnt_off00008d53.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D53 4324 bytes