Malicious PDF — malware analysis report

Static analysis result for SHA-256 7905167ffc1a8e9c…

MALICIOUS

PDF

37.8 KB Authoring application: Karbon First seen: 2020-09-07
MD5: d0edfbbdad21c39f9a1fa1e57c9ab2fd SHA-1: 28fc55dcf64d57e9a503bb89410c1ddf6dd35764 SHA-256: 7905167ffc1a8e9ca30171b906dbe7e08eb4810fee7c2a0bcb97646ab951b213
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a link farm, embedding a large number of external URLs that point to other PDF files. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or SEO abuse. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://camptishomingo.org/uploads/1/3/0/6/130639972/c4d6c605cc82716.pdf In PDF document text
    • http://oldnewborrowed.com/uploads/1/3/0/2/130291449/5952748.pdfIn PDF document text
    • http://cladnh.com/uploads/1/3/0/7/130739695/jobanefapu_nisabadovadi_dirinenoj.pdfIn PDF document text
    • http://chuyitos.com/uploads/1/3/0/7/130776149/2e5ffeb82a.pdfIn PDF document text
    • http://mx.joshdollison.com/uploads/1/3/0/6/130604532/jobowafudodel_jejikokogakaniz_kuwaxeri.pdfIn PDF document text
    • http://one21i.com/uploads/1/3/0/6/130604222/daritesatulijufok.pdfIn PDF document text
    • http://getfantasticmarijuana.com/uploads/1/3/0/7/130776542/vajotomezeje_jovasape_lituzawalezekav_fesewozenufofot.pdfIn PDF document text
    • http://ericamcquiddypsyd.com/uploads/1/3/0/6/130605059/xosimusuwevo.pdfIn PDF document text
    • http://3coconut.com/uploads/1/3/0/6/130620838/b64451aa7b1360.pdfIn PDF document text
    • http://www.ejaznadeem.com/uploads/1/3/0/6/130621480/kenobafi-kiwal.pdfIn PDF document text
    • http://mail.frankydoyle.com/uploads/1/3/0/6/130604779/3ca40b5.pdfIn PDF document text
    • http://trinitykalispell.com/uploads/1/3/0/5/130540402/8460530.pdfIn PDF document text
    • http://www.dejligedayswelcome.com/uploads/1/3/0/5/130589313/591290e7901cc.pdfIn PDF document text
    • http://mycmatro.com/uploads/1/3/0/6/130622011/lutasu.pdfIn PDF document text
    • http://ethergate.com/uploads/1/3/0/7/130739690/manasil.pdfIn PDF document text
    • http://julfcave.net/uploads/1/3/0/6/130640059/gupalisexijesiti.pdfIn PDF document text
    • http://worldwidegreatescapes.com.au/uploads/1/3/0/6/130604292/8612606.pdfIn PDF document text
    • http://hopecenterhampton.com/uploads/1/3/0/4/130436017/f3014b1f409.pdfIn PDF document text
    • http://www.liveyoursovereignlife.com/uploads/1/3/0/6/130605048/rirusogazozivun-rululesojododor-kexirifu-fuzos.pdfIn PDF document text
    • http://kodzie.com/uploads/1/3/0/4/130488243/vasataromuwa.pdfIn PDF document text
    • http://thealbatrosslounge.com/uploads/1/3/0/6/130604226/wujasilujezazijixik.pdfIn PDF document text
    • http://cdizzlerocks.com/uploads/1/3/0/3/130323384/muwumebadexo-zetilazuv-duduxug-zijogumed.pdfIn PDF document text
    • http://cams-collection.com/uploads/1/3/0/7/130738765/2d9f510c2e0985b.pdfIn PDF document text
    • http://ugjw.brdge.org/uploads/1/3/0/5/130589252/130589252.html#ielts+for+academic+purposes+listening+test+5+answersIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AD 7664 bytes
SHA-256: 23349687faa50d3920027c0ee91a8145f7da6a5ad1edaf2c030c1c5abebd5da0