Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f0850d07e6640d…

MALICIOUS

PDF

49.6 KB Authoring application: ImageMagick
MD5: 3864f62ba32e894e3a01f35ad581d21a SHA-1: 694be4f6e7bf5cbb4922d09e8cf3f8710b36fc4f SHA-256: f8f0850d07e6640d0ef82247e91e062bc37559d4af9e63c94bb448169ffcc19d
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of SEO poisoning or a phishing campaign designed to drive traffic to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic-driving intent. No scripts were extracted, and the document body text is heavily corrupted, but the presence of numerous external links is the primary indicator of malicious activity.

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://xil.grandwood-mebel.ru/uploads/2020/01/28/gusedelodurufuvun.pdf
    • http://tisepubipe.igirls.fun/uploads/2020/01/27/jefukokori.pdf
    • http://jofo.shaurmoff.com/uploads/2020/01/27/1722a0d.pdf
    • https://tedulidage.weebly.com/uploads/1/3/0/4/130476339/73412b6e0.pdf
    • http://coworkinginbristol.com/uploads/1/3/0/4/130436494/nigefom.pdf
    • http://7incorporated.com/uploads/1/3/0/4/130483678/967eec679868.pdf
    • http://kamera360.ru/uploads/2020/01/27/jinobuvesoribesowi.pdf
    • http://legacymentoring.org/uploads/1/3/0/6/130622066/kizedezisa.pdf
    • http://gepurtrend.com/uploads/2020/01/28/zesojen.pdf
    • http://zod.muaxehoigiatot.com/uploads/2020/01/28/eb56e1e8.pdf
    • http://tiadasempanadas.com/uploads/2020/01/28/luged_jadul_logedikip.pdf
    • http://war.assinaturareativacaoeletronica.com/uploads/2020/01/28/vigujiji_welidorewoteko_bavivunu_menib.pdf
    • https://wilarirezavik.weebly.com/uploads/1/3/0/5/130589137/3855496.pdf
    • http://gawem.myaccount-solution.net/uploads/2020/01/27/tasufiduxoke.pdf
    • https://galunikavo.weebly.com/uploads/1/3/0/2/130289355/8555182.pdf
    • https://kulovegubitoga.weebly.com/uploads/1/3/0/5/130588968/nubenipixiz.pdf
    • http://feset.sargar.ru/uploads/2020/01/27/661407.pdf
    • http://vatimivaxi.support-account.net/uploads/2020/01/27/zesumoxu_jupozel_xarusafawisa_kasadogiwo.pdf
    • https://wutesebeworaze.weebly.com/uploads/1/3/0/5/130589342/2887902.pdf
    • http://nux.angrybirds.tech/uploads/2020/01/28/3046566.pdf
    • http://livelikeme.info/uploads/1/3/0/6/130620613/130620613.html#examen+tipo+comipems+para+contestar

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001695.bin
48a96835ac3ce1055ba4842b27203bc229c00560cbe81d91d2519c4a828b8e79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1695 9748 bytes
font_01_sfnt_off00007e2e.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2E 2616 bytes
font_02_sfnt_off000086ae.bin
211ed2a624361a0f5f6333a9b24b37087347677bff3bc721dabe9d76fc845ca6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86AE 1828 bytes

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