Malicious PDF — malware analysis report

Static analysis result for SHA-256 18641c1196c6a04e…

MALICIOUS

PDF

40.9 KB Authoring application: OpenOffice Draw
MD5: 496b13243a9654782f2ec839f60d2e90 SHA-1: d54b2a69f1bb67f85a0b3b012012a0aa71b86b28 SHA-256: 18641c1196c6a04e11627e4cfdd2fcd729317647609e586fec42cb52ca3fd7ea
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

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://howepropertymanagement.net/uploads/1/3/0/7/130775917/5990996.pdf
    • http://keuritol.com/uploads/1/3/0/6/130604958/4136934.pdf
    • http://ezatransportation.com/uploads/1/3/0/4/130489706/59376db54242.pdf
    • http://www.bimaristan.org/uploads/1/3/0/3/130312996/gogadijurusor-wesotomav-widenemosi.pdf
    • http://www.100handboundjournals.com/uploads/1/3/0/4/130488312/7909603.pdf
    • http://www.artcarboot.co.uk/uploads/1/3/0/5/130551949/841602.pdf
    • http://rafaelfluker.com/uploads/1/3/0/7/130738681/3487250.pdf
    • http://jthhomes.net/uploads/1/3/0/4/130483811/titifumewivo.pdf
    • http://spanish.blueoceantechnology.no/uploads/1/3/0/5/130545681/puwufor.pdf
    • http://www.208handyman.net/uploads/1/3/0/5/130590051/ff69edaa125.pdf
    • http://mminstitutedsn.com/uploads/1/3/0/6/130604636/9447ff78eacf1e.pdf
    • http://bhbwater.com/uploads/1/3/0/6/130639642/4735500.pdf
    • http://www.myblueyogacruise.com/uploads/1/3/0/6/130604433/robatopubegira_jinilezi_somow_juburixum.pdf
    • http://webappsconsulting.com/uploads/1/3/0/7/130739362/3354e6cf.pdf
    • http://cirm-math.org/uploads/1/3/0/7/130775138/xokujetozewuso-pelorova-jovozesido-jevisisetuzuj.pdf
    • http://74-123-72-249.mgwnet.com/uploads/1/3/0/7/130739399/130739399.html#pdf+reader+for+pc+free+download+windows+7
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003475.bin
eaa4dde51fd04d4db8dc223d97e5e1aeb2070941b7c144db1acc557f645d9ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3475 4184 bytes
font_01_sfnt_off0000440e.bin
d66f5ef9415ed49831c38a253a9a047f669c01de8b09234fc214a3c6f9e25576		 pdf-font-stream PDF embedded font (sfnt) at offset 0x440E 8240 bytes

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