Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfee24e5884b42aa…

MALICIOUS

PDF

37.4 KB Created: 2020-09-16 11:34:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b75ca7609ba5d3483222bf497ca2785 SHA-1: 6063b04672c2fdef6f6ccd704c41bd9c58be71bc SHA-256: cfee24e5884b42aa0009428227c1ed1bd82a59774d36758f322ca6851c180ef4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'icicle christmas lights led' and includes URLs that appear to be part of a link farm designed to attract traffic. The primary goal seems to be directing users to potentially malicious or unwanted content through a deceptive link farm.

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/pify?keyword=icicle+christmas+lights+led
    • http://pasozo.minjinkim.com/uploads/1/3/0/7/130738765/5346660.pdf
    • http://files.roejendradesigns.com/uploads/1/3/1/4/131406762/wugagumigejo.pdf
    • http://files.ceceliacornelissens.com/uploads/1/3/2/7/132741334/kemutetorep.pdf
    • http://defor.gpvaniermusic.com/uploads/1/3/0/7/130738623/rovefatawisumoj_metama_poxumiluxave.pdf
    • http://files.hoosierrentalgroup.com/uploads/1/3/1/4/131407918/05587dffc58.pdf
    • http://files.melissahamiltonphotography.com/uploads/1/3/2/7/132712324/rupular.pdf
    • http://mogum.christianchurchinpennsylvania.com/uploads/1/3/0/9/130968976/wexurumalas.pdf
    • http://mobewujog.childrensartstudio.biz/uploads/1/3/0/7/130739353/pasugaguzojelaj.pdf
    • http://jumored.rosecitytrinityumc.org/uploads/1/3/0/8/130814933/jujalev.pdf
    • http://mawuni.f-growth.com/uploads/1/3/1/3/131383314/5300aceb8.pdf
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.pdf
    • http://kelusol.reachyourmentor.com/uploads/1/3/1/4/131454165/sunoxagajuzara-miwarenidimef-dedeve.pdf
    • https://static.usrfiles.com/ugd/9aab09_0f8e9ccd31204b8e8ab4b2a140de5af4.pdf
    • https://static.usrfiles.com/ugd/234f58_b1225b82a6c84a1aa6627f5dc665cec7.pdf
    • https://static.usrfiles.com/ugd/35c6e2_75300f829046493dab860d88820b896b.pdf
    • https://static.usrfiles.com/ugd/40b9e6_c99184d0abeb477e89611c4aff039954.pdf
    • https://static.usrfiles.com/ugd/de65f7_0103644fa0c74d89ad995a118a39dbbd.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_off00005493.bin
f90c8b037ed1559716b30c893a8d40c7619e56992c1683ef896a397d43eb1d50
pdf-font-stream PDF embedded font (sfnt) at offset 0x5493 5288 bytes
font_01_sfnt_off0000665c.bin
0f94692f8ff8f5fbaa813556edada42acc92d2cc5d601fb0aaaa55b448641766
pdf-font-stream PDF embedded font (sfnt) at offset 0x665C 10100 bytes