Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cff25553332ce6a…

MALICIOUS

PDF

34.3 KB Created: 2020-08-16 22:41:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b0d9cf729365a315594a9e9868ae00a SHA-1: b06265d531e4f296b38cd8c7b640d500a83adb94 SHA-256: 3cff25553332ce6a7b2e733f27fe5d3497aca5ab24e8167a71c618312d9b01ba
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of specific execution chains.

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.com/pify?keyword=weather+report+hyderabad+next+week
    • http://tulirove.ikiru.org/uploads/1/3/2/3/132303117/mubelobil.pdf
    • https://cdn.shopify.com/s/files/1/0438/2212/1122/files/21722833420.pdf
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/l_amiante_dfinition.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4567/files/96818551654.pdf
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/99251555793.pdf
    • https://cdn.shopify.com/s/files/1/0434/1723/9704/files/servers_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9942/2881/files/40355394845.pdf
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/38464270995.pdf
    • https://cdn.shopify.com/s/files/1/0428/5369/5647/files/91095995441.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/shed_designs.pdf
    • https://cdn.shopify.com/s/files/1/0439/0718/6843/files/vawalalazelabizosaxov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7143/files/mowenasemorinuv.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_off000043e4.bin
d8c0b6a1e20a5007490ad2a0507ce8763d6f0e316dfc5de1e0b18eaa622b0191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43E4 5316 bytes
font_01_sfnt_off00005614.bin
4e8ed0b10f678ec1840c1225cac91ebef48c8e87ea9f221e001ef5848c769388		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5614 12200 bytes

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