Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b6f4d7d2af0866…

MALICIOUS

PDF

35.2 KB Authoring application: Smallpdf Desktop
MD5: 00adaab369b7736b813c1d1b228d6b3f SHA-1: 0afa6968954c575a7715d030808c7b447b9fdbc4 SHA-256: 68b6f4d7d2af0866b0d34980e3029da59e079cef762924ac5971d7b4445a8686
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file exhibits characteristics of a link farm, embedding a large number of external URLs that point to other PDF documents. This technique is often used for SEO manipulation or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports its malicious nature. No scripts were extracted, but the sheer volume of outbound links suggests a coordinated effort to redirect or host malicious content.

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://designerforge.com/uploads/1/3/0/4/130488811/98645.pdf
    • http://therelationalmind.com/uploads/1/3/0/2/130271094/6378391.pdf
    • http://chinatmz.com/uploads/1/3/0/5/130588695/reluvebid.pdf
    • http://aboutislands.com/uploads/1/3/0/4/130483592/sewalalemejeto.pdf
    • http://eagleeducationalservices.org/uploads/1/3/0/2/130271063/sopofuge.pdf
    • http://hamiltoncitymobilehomepark.com/uploads/1/3/0/7/130739937/mevipowaze-vijinira.pdf
    • http://yogabyamandaretreats.co.nz/uploads/1/3/0/7/130775257/cf2fa72e11da.pdf
    • http://internationalclimatechange.com/uploads/1/3/0/4/130488165/zirefoxanixazik.pdf
    • http://dropdeadgorgeousbybrittany.com/uploads/1/3/0/6/130639110/xizoz-runejanifagoje-nevowofi-tilurijabokud.pdf
    • http://southlakehousepainting.net/uploads/1/3/0/7/130776168/xijigutefiwunavedinu.pdf
    • http://novodox.org/uploads/1/3/0/5/130590778/9243677.pdf
    • http://motenfoodgroup.com/uploads/1/3/0/9/130969281/joliwu.pdf
    • http://mhsorchestra.org/uploads/1/3/0/7/130776629/fetiduzawuxojivos.pdf
    • http://centreformindfulness.ca/uploads/1/3/0/2/130288301/6001928.pdf
    • http://autodiscover.dickersongreenseminary.org/uploads/1/3/0/4/130483911/130483911.html#aspiration+pneumonia+in+dogs+antibiotics

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003060.bin
e791630821942954bdfecd355cd3ac7056d8517a7a7c077d17a794cbe7c31360		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3060 7600 bytes

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