Malicious PDF — malware analysis report

Static analysis result for SHA-256 d391d525cb212ce1…

MALICIOUS

PDF

32.3 KB Authoring application: SWFTools
MD5: 2fe01ba46ca53337113898d7f2341ee1 SHA-1: 70397fecd265bd78c3861835de24e8260a794b69 SHA-256: d391d525cb212ce1690b6e62df8238236e4961c9499c7574bc0bc3ead3e11ce5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and a critical heuristic detected a 'PDF_SEO_LINK_FARM' with 31 external links. The ML classifier also strongly indicated maliciousness.

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 http://universalspectrums.com/uploads/1/3/0/3/130313504/favezonukejud.pdf
    • http://phroztnet.net/uploads/1/3/0/3/130379398/5054499.pdf
    • http://plussizebridaldressesnh.com/uploads/1/3/0/6/130640000/773290.pdf
    • http://gtdfloors.com/uploads/1/3/0/6/130640183/tujinudagop.pdf
    • http://thehighlandshollywood.org/uploads/1/3/0/5/130550785/1072170.pdf
    • http://minnehahalawns.com/uploads/1/3/0/6/130605190/jazunigalagopuwosone.pdf
    • http://cubiertasdelcielo.com/uploads/1/3/0/7/130776006/dulur.pdf
    • http://prqmale.com/uploads/1/3/0/3/130313286/74ef6.pdf
    • http://artofutility.com/uploads/1/3/0/4/130476205/8b996298.pdf
    • http://limosinkaty.com/uploads/1/3/0/8/130813533/208a6d06ee1.pdf
    • http://hypersomniac.net/uploads/1/3/0/5/130543418/fidomutim.pdf
    • http://windrosecontabil.com/uploads/1/3/0/5/130539936/juken.pdf
    • http://bkhgroup.net/uploads/1/3/0/5/130589216/3480859.pdf
    • http://www.beautyinthejourney.net/uploads/1/3/0/8/130873846/juxipenoboni.pdf
    • http://comfortmypeoplerwanda.org/uploads/1/3/0/6/130604521/2559bc36ab9.pdf
    • http://miamfoundation.com/uploads/1/3/0/7/130738784/2cb397.pdf
    • http://ocseocali.com/uploads/1/3/0/2/130288399/2716742.pdf
    • http://noapparentreason.net/uploads/1/3/0/2/130288731/jodunasazega_popew_filupusawezug_banunibufewafiz.pdf
    • http://flexjm.com/uploads/1/3/0/5/130551055/6593827.pdf
    • http://kandlcast.com/uploads/1/3/0/6/130605116/b5983b24f.pdf
    • http://scrubjay.com/uploads/1/3/0/6/130639456/d3f89.pdf
    • http://capperschallenge.com/uploads/1/3/0/7/130740003/09ce7eda988.pdf
    • http://cabawhomes.com/uploads/1/3/0/5/130542727/nuduzasafevewazapu.pdf
    • http://golbaltravelpros.voyagerwebsites.com/uploads/1/3/0/6/130621856/130621856.html#a+whole+new+world+lyrics+spanish
    • http://comfortmypeoplerwanda.org/uploads/1/3/0/6/130604521/2559bc36ab9.pd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001c3f.bin
6ec64e4f9af1d77c4ddd25ec910f8a25ebf6669c774f1ac4fc149c0c040e2285		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C3F 8180 bytes

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