Malicious PDF — malware analysis report

Static analysis result for SHA-256 c62e7140455f95c5…

MALICIOUS

PDF

41.3 KB Authoring application: Soda PDF
MD5: f49ab19cb3eb810e87381f7375ce80b8 SHA-1: 5dcf6d08f5cdac903db762fd345f14fb7eb0fae8 SHA-256: c62e7140455f95c55c014a13a8105899b113c1946a10465dc519c4f8d2534ae2
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. No scripts were extracted from this sample, but the extensive link farm suggests a delivery or redirection mechanism.

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://greenpatekk.com/uploads/1/3/0/2/130287419/galawi.pdf
    • http://newimageroof.com/uploads/1/3/0/4/130491271/mopokajax-lubazapiborulo-zizefenafuziref-wewakajawefego.pdf
    • http://maddenlife.info/uploads/1/3/0/4/130477192/1445835.pdf
    • http://natureswonders.net/uploads/1/3/0/3/130313127/kowurogada.pdf
    • http://merchandise.kevincruise.co.uk/uploads/1/3/0/6/130604456/wipivujalujet.pdf
    • http://showgirl.life/uploads/1/3/0/4/130476083/9760834.pdf
    • http://zaideescolourrun.org/uploads/1/3/0/6/130640220/misererijifub.pdf
    • http://dragonsoul.mobi/uploads/1/3/0/7/130776239/6782362.pdf
    • http://sexy-money.com/uploads/1/3/0/8/130813948/risatadof-welufabufu-wusozifaliji-difutosudixebi.pdf
    • http://www.chaffeyslock.net/uploads/1/3/0/4/130483875/da957.pdf
    • http://pop-mall.com/uploads/1/3/0/7/130775846/gakagijitefutej-wagapelawek.pdf
    • http://downriverkaraokeanddj.com/uploads/1/3/0/6/130621361/rupiwav.pdf
    • http://www.gammamaterial.com/uploads/1/3/0/3/130379428/1c100860.pdf
    • http://turneduplife.voyagerwebsites.com/uploads/1/3/0/6/130621342/130621342.html#adoramus+te+christe+gasparini
    • http://greenpatekk.com/uploads/1/3/0/2/130287419/g

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000023fd.bin
0b1e678f99019d884546be2cef5ee7f2a1752d519190636561183b516a2fe054		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FD 10344 bytes
font_01_sfnt_off00004715.bin
2c105558ef9ae196075be35c482283564a42c0b6d597de81559c7eb92424ad67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4715 9044 bytes

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