Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa42de11d4402ddd…

MALICIOUS

PDF

42.0 KB Created: 2020-08-22 21:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5daa7dc09199fa22f8f25ba1c15ab967 SHA-1: 7ed4261c4852c89ecd7dfaffee3f7c1a9a305f4b SHA-256: fa42de11d4402ddd223239b6dd9266e823762cd6206735255d9ed482b56bea06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 User Execution T1059 Command and Scripting Interpreter

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=prezi+template+size'. Additionally, it exhibits a PDF link farm heuristic, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/satofekefekuwozavobijogut.pdf'. A high-severity heuristic indicates a clipboard command lure, instructing the user to copy and paste content into a shell. This suggests the document's primary purpose is to trick the user into executing commands, likely to download and run a second-stage payload.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.cc/pify?keyword=prezi+template+size
    • http://files.rram.ca/uploads/1/3/2/3/132303099/49683eb71e972.pdf
    • http://pafosome.thewardrobeclothing.com/uploads/1/3/0/7/130775971/dozemenaxekiga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/satofekefekuwozavobijogut.pdf
    • https://cdn.shopify.com/s/files/1/0432/5061/4429/files/negafuwarikut.pdf
    • https://cdn.shopify.com/s/files/1/0436/2980/5726/files/76414534380.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8372/files/reluzerufamejipasadoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuxevitilikibuvenimomabu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0177/2192/files/sterling_night_hero.pdf
    • https://cdn.shopify.com/s/files/1/0447/5250/2935/files/archie_comics_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0350/files/79496572489.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/mockingjay_archive.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/tokekosiguzup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.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_off00005b41.bin
5b494a548779fbe8291d14d9afc9fabbe0ef16e2c57ac1b373578d22ceea3cdb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B41 4588 bytes
font_01_sfnt_off00006ac5.bin
6ebae0abb53252be07aec9d19dc1a162a8aa880228acd8beba58838d466755d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC5 10060 bytes
font_02_sfnt_off00008d3b.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3B 4324 bytes