Malicious PDF — malware analysis report

Static analysis result for SHA-256 985d2e6100994bae…

MALICIOUS

PDF

42.3 KB Created: 2020-09-10 18:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 795c650f84afc420a30372a9282e7891 SHA-1: fb027e28e43d68c6e983827efb2b4ddd27fdb216 SHA-256: 985d2e6100994baedf7a6743d715ceee782e88208ca4804e32245c70ba83a08d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector services or link farms. One prominent link, disguised with a search-like keyword, leads to a malicious redirector. This suggests a phishing or social engineering attack aimed at driving traffic to potentially malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the link farm and redirector heuristics strongly indicate a malicious intent to redirect users.

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.link/wix?keyword=police+beep+test++free
    • http://zagipa.shadesofthetropics.com/uploads/1/3/1/0/131070109/1c79791f55f.pdf
    • http://files.bethsecristbabywearing.com/uploads/1/3/0/8/130874559/ruramurufinigo-wuxiwuvade-sebagun-vakagasetep.pdf
    • http://files.ericwallsillustration.com/uploads/1/3/2/3/132302759/risepebanexuzaj-boleguvuxetabi.pdf
    • http://files.santanhistorical.org/uploads/1/3/1/6/131607522/siwirowagis_wavatejopar.pdf
    • http://tabarede.mrskestin.com/uploads/1/3/1/4/131483281/4d196af3c.pdf
    • http://files.drycreekbaptistchurch.com/uploads/1/3/0/8/130814043/pavojobalurebipav.pdf
    • http://gatuba.buckhillcoffee.com/uploads/1/3/1/3/131380600/9470864.pdf
    • http://files.dragonchoirs.net/uploads/1/3/0/7/130776619/6051802.pdf
    • http://files.mcguirefamilyfarms.com/uploads/1/3/1/3/131384113/98eb93ffec1.pdf
    • http://vifafeso.perfectplaylist.net/uploads/1/3/0/7/130775045/3fd8146bf4bc20a.pdf
    • https://static.usrfiles.com/ugd/12daa7_a395cfceaf9449e6b8e6d15f8b114576.pdf
    • https://static.usrfiles.com/ugd/bfbc46_c9023ae9da7e4832a32ad0446404b044.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_a718cc4d2152400e973e60a05e08f0a0.pdf
    • https://static.usrfiles.com/ugd/3e5db3_85d630068dfe4ee2b0e35d3308cb051d.pdf
    • https://static.usrfiles.com/ugd/63d3ad_3b5f062ffe3c45ce8811fdd804dcf81b.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_off000069a1.bin
e46f8bd236e882974932949c1a372806bc55e93d2f3d7c89580fa177468b520f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A1 4940 bytes
font_01_sfnt_off00007a7c.bin
94086cc3cfdfb06242356edc3df5ca50a8c12ca49816951337e75d7ac29922ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7C 10016 bytes

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