Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41a6626d34d329c…

MALICIOUS

PDF

51.1 KB Created: 2020-09-07 12:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b739eba0b1d231303a709c133801c41 SHA-1: e4b8bc4d5f623767e1c0eb14078faa370f1c93f6 SHA-256: f41a6626d34d329c200cdec32aafa95872ed7b232d8cc81ffa1118127241d0e8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. The document body, though heavily obfuscated, contains text related to 'Panasonic breadmaker recipes pdf' and the URL itself. This suggests a social engineering lure to trick users into clicking the link, which then redirects to malicious infrastructure. The PDF also contains a link farm heuristic, indicating a large number of outbound links, many of which point to 'static.usrfiles.com'.

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.club/pify?keyword=panasonic+breadmaker+recipes+pdf
    • https://static.usrfiles.com/ugd/f99735_51baef6abce849b688c58ee640547465.pdf
    • https://static.usrfiles.com/ugd/ecd213_0f1946f0b7884391a218d68cec6dbbc1.pdf
    • https://static.usrfiles.com/ugd/83d902_89841cd4ad7c42cb812712b0cdd00bae.pdf
    • https://static.usrfiles.com/ugd/3ce946_a9512400b789456eb6dbc66e27c7313b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a0445fbf03441d0a8e13c78aaf8a6cc.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/xejexisiwajazedu.pdf
    • https://cdn.shopify.com/s/files/1/0447/1455/7596/files/atlassian_bamboo_agent.pdf
    • https://static.usrfiles.com/ugd/b8c837_0202632f4e124db693db91f62f856c52.pdf
    • https://static.usrfiles.com/ugd/599026_8db16f3b27ed40d9b2861c7a71f2d749.pdf
    • https://static.usrfiles.com/ugd/b8c837_f25449f8f3d245d2bead0c1867bef2d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc521717ca6b4144b1c2522fc09c90ae.pdf
    • https://static.usrfiles.com/ugd/7a359d_7eb5e664f2f64eefb461b809d328a153.pdf
    • https://static.usrfiles.com/ugd/097bd5_9dc3f89a40a34dedb876011cc29c0c56.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_off00008a29.bin
672fdcdd2f7bd6ddeb6623a836dfd577a7f5045a927c06f6c838a51f28ff964e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A29 5476 bytes
font_01_sfnt_off00009cab.bin
4c8002af0247fa9c5de8cc8c6d670f8477bf1bcd0ca72d42aab8998ec03e9f33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CAB 10120 bytes

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