Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f5ff4ad2e0450b2…

MALICIOUS

PDF

46.6 KB Created: 2020-09-10 13:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 571fc28293738108c3cc618bf02a8a9f SHA-1: 988f1ed88510590ecba320998190bd2b46e0b89c SHA-256: 2f5ff4ad2e0450b2c8e0c9cf0fe960534c95611da6233d7ccd0ce942a3009206
120 Risk Score

Malware Insights

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

The PDF file contains a mass external PDF link farm, with multiple links pointing to benign content, but one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Rental guarantor form template' and the malicious URL 'https://ttraff.me/wix?keyword=rental+guarantor+form+template'. This suggests a social engineering lure to trick users into clicking the malicious link, likely leading to further malware delivery.

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.me/wix?keyword=rental+guarantor+form+template
    • http://zapezi.newulmturnerhall.org/uploads/1/3/1/4/131408738/bepupoteluza_wajufomif_lusebudemuwagip_guvefixamiral.pdf
    • http://megijox.bcimc.info/uploads/1/3/2/6/132683168/zajanotalaj-tesepatarevas-levaxizuwase-tisaleka.pdf
    • https://static.usrfiles.com/ugd/04c368_8adcc859c838499a8358c47d8962952a.pdf
    • https://static.usrfiles.com/ugd/c75f60_f133a42fe4584b3b82d677af2a5fc7c4.pdf
    • https://static.usrfiles.com/ugd/3e87bf_a4b05e40434248599d90ac72e91688a5.pdf
    • https://static.usrfiles.com/ugd/cf79db_6ea21865355b4d4b88904c5b8946b8c0.pdf
    • https://static.usrfiles.com/ugd/5e81b9_517fe68fad6e4b1cbf041847009aec83.pdf
    • https://static.usrfiles.com/ugd/f6336d_e4fb33c680be4ebea6f68d6e02d95a9e.pdf
    • https://static.usrfiles.com/ugd/769f78_27ec749f35684b969efefbae9c662c40.pdf
    • https://static.usrfiles.com/ugd/3fc21f_2d415fb53545493ea0d098ad67b426ce.pdf
    • https://static.usrfiles.com/ugd/808cd0_4f513fd4ef6849e6b7e93f635e1ab4ec.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_off00007a44.bin
6b726ba59a4620d015e5c43b99959af2aa36506c06d8e5f65d1accaf19194b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A44 5048 bytes
font_01_sfnt_off00008b68.bin
d8330a10538605bb9af882198693609eab34f8b67d06c55383a2a571fec4ac05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B68 10008 bytes

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