Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6d9d836d3a76be…

MALICIOUS

PDF

51.0 KB Authoring application: Inkscape
MD5: f75f6df83c8910d45fb85281142d30e0 SHA-1: cbcc3d0ce59e2aa2637990de4f3dfcbf6e8baf10 SHA-256: 4a6d9d836d3a76beea03e67510792b29e43dceb132b069d1f8404a18c0f90b7c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a mass external PDF link farm, with the primary domain being cochisewine.com.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://cochisewine.com/uploads/1/3/0/4/130435638/tanuvewatukijim_noduzeseluxax_nuwulilipumufi_zavotide.pdf
    • http://dotsengaged.com/uploads/1/3/0/5/130590029/mexinunimifen.pdf
    • http://ednenterprisesllc.com/uploads/1/3/0/2/130289731/sumazediw.pdf
    • http://fetalcardio.org/uploads/1/3/0/4/130483961/jadepovukaxut.pdf
    • http://throwthehammer.com/uploads/1/3/0/6/130621707/mulorebuwitume.pdf
    • http://sidtandkendrasaunders.com/uploads/1/3/0/6/130639368/wokezisapikox-rasoni-neveseteleluva-mefefizibibogu.pdf
    • http://theoilymixer.com/uploads/1/3/0/5/130588769/fixutaroto.pdf
    • http://partyhusband.com/uploads/1/3/0/5/130588395/3620c5.pdf
    • http://androidisfor.me/uploads/1/3/0/6/130604639/8598495.pdf
    • http://muevetefacil.com/uploads/1/3/0/5/130590391/depekafabimela.pdf
    • http://innovanations.com/uploads/1/3/0/5/130589187/fusiwixetiveluxumev.pdf
    • http://chinawindow.biz/uploads/1/3/0/4/130476271/4364699.pdf
    • http://sjumixedchorus.net/uploads/1/3/0/8/130814122/gijiposoxizunu_walima_vokonojutadi_namakon.pdf
    • http://nlightnstudio.com/uploads/1/3/0/7/130776481/xujewapew.pdf
    • http://authorconversations.com/uploads/1/3/0/7/130739704/38e5d15.pdf
    • http://createcashflowformula.ca/uploads/1/3/0/2/130291699/e61b485350d.pdf
    • http://74-123-76-9.mgwnet.com/uploads/1/3/0/6/130604862/9397453.pdf
    • http://mybrookfield.org/uploads/1/3/0/5/130589195/2152293.pdf
    • http://hillbillysolutions.com/uploads/1/3/0/2/130272318/8722132.pdf
    • http://stillwaterswellness.org/uploads/1/3/0/5/130540193/623a0b.pdf
    • http://wellnessbethechange.com/uploads/1/3/0/7/130775032/fojonevolut-fosobisuko-doxizex-bowevame.pdf
    • http://airlieecoartfest.com/uploads/1/3/0/4/130435843/52fbd91039f.pdf
    • http://missfitonline.com/uploads/1/3/0/7/130739633/7398800.pdf
    • http://74-123-77-52.mgwnet.com/uploads/1/3/0/5/130588188/130588188.html#common+and+systematic+name+of+unsaturated+fatty+acid

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fe4.bin
e3d86c99a98be21684fcd504186052939f6059d1eb1e664e918ccf1b7a433f09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4 8048 bytes
font_01_sfnt_off00007615.bin
ac583b3be015371b77a97100190c157329312edcfdb0db62a8bcc86278da0014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7615 3620 bytes

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