Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c0617a4ef184f1…

MALICIOUS

PDF

53.3 KB Authoring application: OpenOffice Draw
MD5: f501bcdb5b6181bed8c64cbe860d1686 SHA-1: 3dc2bcb2753744c9398cc965ed47dc25935f4530 SHA-256: 15c0617a4ef184f12d6876cc3e847d82a2566bce5e3ddf2bc37caf48ddece687
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to distribute malicious content or manipulate search engine results. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://arkadyitkin.com/uploads/1/3/0/7/130739856/102a5c74e1.pdf
    • http://purgatoirevalleyfoundation.org/uploads/1/3/0/5/130543816/419383.pdf
    • http://americanbenefitsolutions.net/uploads/1/3/0/7/130738780/4547431.pdf
    • http://socalhomesavers.com/uploads/1/3/0/7/130776341/koxibelixaxezironob.pdf
    • http://bestoculusgames.com/uploads/1/3/0/6/130605442/1073763.pdf
    • http://maryneimanphotography.com/uploads/1/3/0/5/130545365/1ea640.pdf
    • http://budgetbarbi.com/uploads/1/3/0/3/130323979/2cba071.pdf
    • http://pianoninja.net/uploads/1/3/0/8/130813364/napavesezikiwoka.pdf
    • http://nativitybloomingtonparish.org/uploads/1/3/0/3/130379315/duxawu.pdf
    • http://greatmomentsinspace.com/uploads/1/3/0/7/130776239/sikojozugekepogus.pdf
    • http://www.strategic-im.fr/uploads/1/3/0/6/130621219/nerulina.pdf
    • http://healthcarejustice-pbc.com/uploads/1/3/0/5/130543333/8023519a.pdf
    • http://www.kyliebarclay.com.au/uploads/1/3/0/3/130313015/318ad2ccc4b39e.pdf
    • http://mxwdjty.com/uploads/1/3/0/6/130604905/dadaw.pdf
    • http://utahprospects.com/uploads/1/3/0/2/130272381/palar.pdf
    • http://www.em-bou-yes.com/uploads/1/3/0/7/130776749/lujegizanexewofuzuk.pdf
    • http://raisingaidfordogsatrisk.com/uploads/1/3/0/6/130640231/836309f0.pdf
    • http://artisticlighting.net/uploads/1/3/0/2/130289291/rotepafufi.pdf
    • http://cpanel.jhigh18.com/uploads/1/3/0/6/130605269/130605269.html#cisco+ip+access-list+extended+example

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011de.bin
d69fa98468dbb3c42392ca4562bbc15899c287dba1e87e77ff6e3c36d899223c
pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE 8300 bytes