Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e801488201a540…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 01:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 332ab6623e5fd53de1105c1059d7d29a SHA-1: a75b38312e98ecfac8c56fdafbdeca63a6c8b74b SHA-256: b9e801488201a540791fb93b926b7db84c7737a6a60b1fe8ff3344cff01b2862
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link to a redirector URL, which is a common technique for phishing and malware delivery. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify-hosted PDFs. The presence of a visible LOLBin command execution instruction suggests the document is designed to execute commands, likely to download and run further payloads. The primary malicious URL identified is ttraff.com.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=horizontal+and+vertical+stretch+and+compression+worksheet
    • http://lajed.simakova-yulia.com/uploads/1/3/0/9/130969893/zediwapuz-mavipixir.pdf
    • http://files.theporterauthority.com/uploads/1/3/1/6/131606027/nubuduzari.pdf
    • http://dumal.michellejensen8.com/uploads/1/3/0/7/130739783/f6a4e7b4.pdf
    • http://files.powershellder.com/uploads/1/3/2/3/132303126/fufujekodasuroju.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/51707121471.pdf
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/disney_piano_solo_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/language_basic_concepts_theories_and_pedagogy_english_in_use.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/civil_registration_system_project_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/24312872124.pdf
    • https://cdn.shopify.com/s/files/1/0447/9080/8727/files/60702898962.pdf
    • https://cdn.shopify.com/s/files/1/0438/1828/7266/files/significado_del_uniforme_de_enfermeria_blanco.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6221/files/kabatodemexudajaxofa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0920/2597/files/litanenuvamajobobojil.pdf
    • https://cdn.shopify.com/s/files/1/0438/8870/5688/files/javascript_combine_arrays.pdf
    • https://cdn.shopify.com/s/files/1/0431/6682/6656/files/85630233975.pdf
    • https://cdn.shopify.com/s/files/1/0437/4750/8385/files/xolozavatijabise.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/formal_conference_invitation_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/sijikawitareliwizarere.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1101/files/gedavajunotugelama.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_off00005d9c.bin
95e62e1e93addaf83cc748c06c3e352ddb201f52c52093fea0ee1e0e060075d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9C 5328 bytes
font_01_sfnt_off00006f9b.bin
8e8cf3da9b6058853d8d32ff9b8376fc03c60a43c431964002ec05fa12ee3987		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9B 10916 bytes
font_02_sfnt_off000094c4.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94C4 4324 bytes

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