Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca6436544d20376…

MALICIOUS

PDF

61.3 KB Created: 2021-04-15 05:10:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8e813e8b4a5b8a768ac900194fed16b SHA-1: 3b67bd3f28c1d55b2f8f7961a9ab0b6699ee61ff SHA-256: 7ca6436544d203766173b6bbbdb82605a4225ec88777925a8fdfb0538f787fbd
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which are part of link farms on disposable hosting, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a product search, intended to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8124

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://www.mothercare.ro/sites/default/files/webform/resumes/77861868930.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/58607877977.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/palepipob.pdf
    • https://ambrose.edu/sites/default/files/webform/natogaj.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/zolevijovexoneda.pdf
    • https://www.uts.cw/sites/default/files/webform/47116150145.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/41266633523.pdf
    • https://vectorcorp.net/sites/default/files/webform/resume/sowasipaxezok.pdf
    • https://www.telluridescience.org/sites/default/files/tstc-applications/pagasumoxozodaxatukaliwus.pdf
    • https://www.jsif.org/sites/default/files/webform/95147346690.pdf
    • https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/memirudomonejusowanasu.pdf
    • https://www.termis.org/system/files/webform/manejuwavujegajejumoxak.pdf
    • https://www.uts.cw/sites/default/files/webform/tizodakemepegipupimegoxi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=sears+craftsman+1%252F2+hp+garage+door+opener+remote
    • https://community.princeton.edu/system/files/webform/luzixuganigofifabeja.pdf
    • https://community.princeton.edu/system/files/webform/vujipudujusikal.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da21.bin
42caf5869ff165f88c190640a5dbfaf1d4f0689fe134ab2e90c1574aea529c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA21 5860 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.