Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b2c46218be69e4…

MALICIOUS

PDF

96.2 KB Authoring application: GIMP
MD5: c732d7f779b195e00b7699bfe9a1dd42 SHA-1: 38cebc5d2a27dab6ae90bf84136b7a1e2323a788 SHA-256: 30b2c46218be69e4bc14d810cdde8dc951c4387e0f7f50870e672ef1f4db6fdf
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to other PDFs, a technique commonly used for SEO poisoning to drive traffic to malicious sites. The document body, though heavily obfuscated, contains URLs that are likely part of this link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

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 https://kidibibore.weebly.com/uploads/1/3/0/4/130476601/fakixas.pdf
    • https://nonasetejuxafep.weebly.com/uploads/1/3/0/3/130313671/vififadojotik.pdf
    • http://leapfrogcamo.ca/uploads/1/3/0/2/130287419/vodobir.pdf
    • https://mewameruf.weebly.com/uploads/1/3/0/5/130543121/jejuwovisozogo_wapezudezed.pdf
    • http://alexandriasday.com/uploads/1/3/0/5/130540118/laparivili_fagalunedowaxi_xifuromulodi_nukodupaxafoj.pdf
    • http://choosesani.com/uploads/1/3/0/2/130291539/tunijifilete.pdf
    • http://bonusmath.com/uploads/1/3/0/4/130488626/zutabiwarogafe.pdf
    • http://newrootscharter.org/uploads/1/3/0/2/130288430/1607849.pdf
    • http://likenewelectronic.com/uploads/1/3/0/4/130475938/xajipubudafomimamen.pdf
    • http://giwi.feismen.tech/uploads/2020/01/28/gobokepo_xifudugelisuzev_wumefoguxuruz_femaloke.pdf
    • http://yolozwolle-lekkerpuh.nl/uploads/1/3/0/6/130604799/59f5536c96.pdf
    • http://riversideatwollaston.com.au/uploads/1/3/0/4/130488288/c4aa7f3927a6e7e.pdf
    • http://moayas.com/uploads/1/3/0/6/130604127/4714687.pdf
    • http://vokul.technolojix.com/uploads/2020/01/28/1323979.pdf
    • http://paragon-eye.ro:80/uploads/2020/01/28/zipopin_mofize.pdf
    • http://project-solutions.org/uploads/1/3/0/4/130477064/7210533.pdf
    • http://mojiged.provzor.ru/uploads/2020/01/29/46f6d55.pdf
    • http://spectrumlifecare.net/uploads/1/3/0/4/130483953/vifes.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/6/130620602/130620602.html#synonyms+and+antonyms+list+with+meaning+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001632.bin
59d8347b4aa7b7f672b66ef15972bda856a766c763d3acec1a7392da4bf40895		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1632 8128 bytes
font_01_sfnt_off00011969.bin
b501e6966be61a122275feb5b47f77d72f5325d78966ec927af111fb7186c5c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11969 19252 bytes

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