Malicious PDF — malware analysis report

Static analysis result for SHA-256 39dea1c877c9f514…

MALICIOUS

PDF

36.1 KB Authoring application: Solid Converter PDF
MD5: 312186300feb4827a2795ba3ce100200 SHA-1: 9002ae81dd297d726692934a7531e6bb7199f44d SHA-256: 39dea1c877c9f5144a97a939dbd78bd2e0d362a69493abc7ef88659b868e6712
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

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 https://titamezu.weebly.com/uploads/1/3/0/3/130379111/jofaloruvo_ninigime.pdf
    • http://08dushu.com/uploads/1/3/0/3/130313427/6745355.pdf
    • http://votenaominarvaiz.com/uploads/1/3/0/3/130379361/bf6d25a9a0ada.pdf
    • http://alchemymg.com/uploads/1/3/0/4/130489222/2040739.pdf
    • http://giwexesuv.fabrika-perchatok.com/uploads/2020/01/28/favufalunusod.pdf
    • http://morganelwell.net/uploads/1/3/0/5/130538866/4943235.pdf
    • http://vetpoint.us/uploads/1/3/0/5/130551058/zezenagulutavu_tefenepa_dufijepivax_gofim.pdf
    • http://dottis.ch/uploads/1/3/0/3/130313345/1133be11031b0.pdf
    • https://denanukonatutu.weebly.com/uploads/1/3/0/2/130288321/wikufa_tikaditunuverus_fenujunudabud.pdf
    • http://sironaliving.net/uploads/1/3/0/4/130476065/3576627.pdf
    • http://columbinecabinsco.com/uploads/1/3/0/6/130621714/40abd.pdf
    • http://trinitykalispell.com/uploads/1/3/0/6/130639728/4848db2687fac3.pdf
    • http://peaceofmindkindercare.com/uploads/1/3/0/4/130483384/xifexukovodir_zakepuvidizi_dedafu.pdf
    • http://cuffedbyjewels.com/uploads/1/3/0/3/130323422/7207100.pdf
    • http://77thscouts.ca/uploads/1/3/0/6/130604259/sidivuvusozugajakifo.pdf
    • http://rosshousemuseum.ca/uploads/1/3/0/6/130621238/8739048.pdf
    • https://vakawijo.weebly.com/uploads/1/3/0/2/130289741/jimuvutekajex_waludugusuke_zufivumeso.pdf
    • http://pelu.lkfl.ru/uploads/2020/01/28/kufarojelon.pdf
    • http://biofouling.net/uploads/1/3/0/4/130436213/130436213.html#misplaced+dangling+modifier+worksheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001574.bin
2e98a8fdaa2076fab0fcfbec7e6144470cc31fb8e8275e504eec4c741307df7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1574 8132 bytes

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