Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca387206f4c5f6f…

MALICIOUS

PDF

34.7 KB Created: 2020-09-20 01:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 070c095cdff4482da140588c8ffd6fb7 SHA-1: e80b69232d76c10eca052c2b37d120c2b1da05ef SHA-256: 4ca387206f4c5f6fe50d5a167ec24f1fe5ef0a8b4e904c660c4910ccba8e8350
150 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 suspicious domains, indicating a link farm or SEO poisoning attempt. One critical heuristic specifically identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the string 'Raze 3 unblocked 76' and the URL that triggered the redirector heuristic, suggesting a lure to a potentially malicious download or game site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=raze+3+unblocked+76
    • http://files.intercessioncitycog.com/uploads/1/3/0/7/130775071/80b854dad78.pdf
    • http://somakeje.roykindelberger.com/uploads/1/3/1/6/131636903/fb10fe048646290.pdf
    • http://zupuvera.ezrecreationalracks.com/uploads/1/3/0/7/130775643/timamamavubageg.pdf
    • http://files.harperfolsom.com/uploads/1/3/0/7/130738978/tuwozafemogi.pdf
    • http://pavube.northerncoloradopetiteballerinas.com/uploads/1/3/1/4/131453494/46354a8edbad4ae.pdf
    • http://kosuguxo.cornjournal.com/uploads/1/3/0/8/130813528/704066.pdf
    • http://dewus.shopmerricks.com/uploads/1/3/0/7/130775732/fisunowejisow-tudigukopomeke.pdf
    • http://gulaj.ksprofessionalpainting.com/uploads/1/3/0/9/130969204/1994765.pdf
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/kujosipana.pdf
    • https://cdn.shopify.com/s/files/1/0430/4004/7253/files/hp_laserjet_p2035_manual.pdf
    • https://cdn.shopify.com/s/files/1/0483/6035/8039/files/best_drill_press_laser_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/9015/7474/files/kartilya_of_the_katipunan.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/boogie_nights_movie_in_480p.pdf
    • https://0858e468-6d7e-47fa-b06e-fdbb9f1decaa.filesusr.com/ugd/b5472a_b16de3fc205f4e7e9e450b60807b9449.pdf?index=true
    • https://e2dd092c-bedb-471d-b48c-df575909ec2a.filesusr.com/ugd/607883_7b973c76096c42c096737e6879374896.pdf?index=true
    • https://bd816fd2-a9ec-41e4-9d8a-eb9fa1add39e.filesusr.com/ugd/a2ebd8_14ee2803f7e9484fb71352f16d14f137.pdf?index=true
    • https://8426fdab-490e-4419-b70e-7ce7775f24e6.filesusr.com/ugd/39a0fd_633c99ebb8894ad393b61983cc5dba9a.pdf?index=true
    • 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_off00004a4c.bin
1cf729b9c95e4aece153bf83373dfc336e2d8a5fd9338edc2a9d78bf5fe6eace
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A4C 5320 bytes
font_01_sfnt_off00005c85.bin
c00da577cf515dd167741e9a30c2b28173d69db21ff6540e0b581cae358db99f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C85 9896 bytes