Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6dd182d5f83582…

MALICIOUS

PDF

34.4 KB Authoring application: Nitro PDF
MD5: 09bce8a2059bcd476ab5a536f3cc5803 SHA-1: 64fa766999205a4c4ea4a413ae48b96359d58c01 SHA-256: ee6dd182d5f83582e12a91fa9599acf4f036dfb5f368b1d635f237213e5710eb
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing or traffic redirection. The document body, though heavily obfuscated, contains keywords related to medical conditions, potentially as a lure.

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://mymosaicalphabetbook.com/uploads/1/3/0/6/130604947/kibuzo_zowumowina_bumuxotidut_xomibubiw.pdf
    • http://joshturse.net/uploads/1/3/0/5/130551864/badopuvonot-tumoxipuraz-maxejusemuza-vakosojesor.pdf
    • http://dollarstore-plus.com/uploads/1/3/0/6/130604612/92a579.pdf
    • http://androoms.net/uploads/1/3/0/8/130873842/besowediro.pdf
    • http://abilenecares.org/uploads/1/3/0/5/130590541/fikofagep.pdf
    • http://brightnaidu.com/uploads/1/3/0/5/130588749/jivewidev_natajakeniju_wevukanosisegen.pdf
    • http://biztagram.com/uploads/1/3/0/4/130435670/5905570.pdf
    • http://lluviaoutsourced.com/uploads/1/3/0/5/130588769/gubiwaluragadi.pdf
    • http://testvocabulary.com/uploads/1/3/0/7/130739517/7442639.pdf
    • http://thephoenixadjusters.com/uploads/1/3/0/7/130738759/453757.pdf
    • http://www.red115.com/uploads/1/3/0/5/130590689/130590689.html#newborn+metabolic+acidosis

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb0.bin
def845f9258bc057647ac986be9b0b1bdf0eb98845f60c05a64515957c5bfcb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB0 8452 bytes

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