Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a9c64785ea4b39f…

MALICIOUS

PDF

44.0 KB Authoring application: Serif PagePlus
MD5: c36c79e75759c5904c97987e8142f188 SHA-1: d2e9deced0f677634cf27cc0f8f5ed9aed7c25ab SHA-256: 8a9c64785ea4b39f4b605286854e7263d79f2d800d31f56563819adb4353919d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files on various domains, a technique commonly used for SEO poisoning or redirecting users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or malware distribution. No scripts were extracted, but the structure and embedded URLs suggest a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://momentumdavis.com/uploads/1/3/0/2/130274315/dc5724a0.pdf
    • http://laspadaitalia.com/uploads/1/3/0/5/130546415/cc6b811f1206.pdf
    • http://getsocialfied.com/uploads/1/3/0/3/130313561/detedelipofaponug.pdf
    • http://l3games.net/uploads/1/3/0/4/130476579/lumuwakewuvad.pdf
    • http://vickiaskew.com/uploads/1/3/0/8/130874410/5531d5c7ab1108.pdf
    • http://www.mnmsonmicrosoft.com/uploads/1/3/0/6/130604764/donikufobaxetos.pdf
    • http://runsheetapp.com/uploads/1/3/0/7/130776619/3025726.pdf
    • http://mwmbg.org/uploads/1/3/0/4/130476276/forojojalejogis.pdf
    • http://www.a1colville.com/uploads/1/3/0/7/130775810/7154778.pdf
    • http://lucykilcoynedesigns.com/uploads/1/3/0/2/130272903/63d2954bb096.pdf
    • http://neutralskincare.com/uploads/1/3/0/6/130620551/5125424.pdf
    • http://allencabinetshop.com/uploads/1/3/0/4/130483396/resulejus.pdf
    • http://constructiondollarsandsense.net/uploads/1/3/0/3/130313582/134ff53.pdf
    • http://kitchenartdesigntexas.com/uploads/1/3/0/3/130323962/9064149.pdf
    • http://royfonte.com/uploads/1/3/0/7/130738921/2478534.pdf
    • http://riversidecountyhistory.org/uploads/1/3/0/6/130621044/130621044.html#total+variable+cost+definition+econ
    • http://lucykilcoynedesigns.com/uploads

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034e0.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x34E0 16036 bytes
font_01_sfnt_off00004cce.bin
6d78f42886cdd6337563b9f7741d507ad37e11d4e171e6163d9072f79a27a04d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CCE 9660 bytes