Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e6d3b6af6a20672…

MALICIOUS

PDF

35.8 KB Created: 2020-08-06 13:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 832efc53a9c3824cdc271058d864fd9d SHA-1: 52a34d98275c1d42b39a4091b6c927ee868a1387 SHA-256: 3e6d3b6af6a20672123bc4a3ba81b73ef1aa2e3f59ee3ae10fb939e0d285a9a8
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at ttraff.com. The document body, though heavily obfuscated, contains the URL that initiates this redirection, suggesting the primary purpose is to lead the user to a compromised or malicious site. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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=quimica+inorganica+housecroft+pdf+portugues+download
    • http://files.a-la-karte-online.com/uploads/1/3/2/6/132682290/pebul.pdf
    • http://files.despairandangst.com/uploads/1/3/1/4/131437724/pibaguwub.pdf
    • http://files.spencerandsarahphotography.com/uploads/1/3/0/7/130739802/nixobibeledagopuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/27942367989.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9966/files/82847656428.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/admission_form_aiou.pdf
    • https://cdn.shopify.com/s/files/1/0436/2030/3011/files/wabasawuragedubexetunide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/xowemezak.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/john_deere_la125.pdf
    • https://cdn.shopify.com/s/files/1/0431/8484/9045/files/attila_metalcore_band.pdf
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/beverage_cost_control.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/bikusapemutedimilejunip.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_off00004ceb.bin
83db9addde1cd34afb82cbe9d1fce19b0161da883229a473137c91ecf4695c9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CEB 5724 bytes
font_01_sfnt_off0000604c.bin
34317e7c7c624a1e1b5e789fce666fa203c10701ae168f48b3fbb849bc1b6c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604C 9904 bytes

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