Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f05d0bad52e757e…

MALICIOUS

PDF

37.5 KB Authoring application: Scribus
MD5: cfc5e2a7b262453b738063562f1b690b SHA-1: 968550b44827b9282c4734dcf57c490b754007eb SHA-256: 6f05d0bad52e757e25ab41fc57895702f4f00ca910d5005610bb9aceb645649e
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links to external PDF files, indicating a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were extracted, the presence of numerous outbound links points towards a phishing or content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://lefkasluxuryvillas.com/uploads/1/3/0/6/130639929/kadobolu.pdf
    • http://multiplesclerosiscenterofsoutherncalifornia.org/uploads/1/3/0/5/130550936/9848586.pdf
    • http://gainedpower.com/uploads/1/3/0/4/130476085/02260a955.pdf
    • http://hipfolkstore.com/uploads/1/3/0/3/130323406/liwamevamow.pdf
    • http://flipyourthreads.net/uploads/1/3/0/5/130550741/8698a2c8b3377.pdf
    • http://mdcurbside.net/uploads/1/3/0/6/130605373/d6737fcb0256.pdf
    • http://potterprose.com/uploads/1/3/0/3/130379412/wawaxali.pdf
    • http://leadershipmasteryseries.com/uploads/1/3/0/4/130436306/ziwuragomaralu.pdf
    • http://www.mwvhc-nh.org/uploads/1/3/0/8/130814232/mokamuwadun-nukogijawedu-sadevitodolone-fokejafura.pdf
    • http://www.westkrete.com/uploads/1/3/0/5/130543239/3260316.pdf
    • http://travelwithahmed.com/uploads/1/3/0/3/130323384/4b3172.pdf
    • http://symschall.store/uploads/1/3/0/4/130435589/wokif.pdf
    • http://downsmassage.com/uploads/1/3/0/6/130639197/wokiruwori.pdf
    • http://myfujingarts.com/uploads/1/3/0/7/130776314/zorabizideforid.pdf
    • http://ontrackrti.net/uploads/1/3/0/6/130620341/2131989.pdf
    • http://74-123-79-147.mgwnet.com/uploads/1/3/0/6/130605405/130605405.html#hypoglossal+nerve+supplies

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003917.bin
752fd5b3b4149bc19c99b52a06bfffe5601d40818e935ea04bf6534e89f48bfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3917 7528 bytes

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