Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e9abd07b5ce132…

MALICIOUS

PDF

49.2 KB Authoring application: Nitro PDF
MD5: 7b6e0f3140c2c0cac962454d5b8769a2 SHA-1: e95409000a312c186b510d1e3977161db6870b66 SHA-256: 61e9abd07b5ce1329970f52da7f61879c2cb064aff3b6d585071df43cf2f9fe9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, and exhibits a large number of embedded external links. The document body contains a mix of seemingly unrelated text and a list of URLs, suggesting a phishing or SEO spam campaign. The primary attack pattern involves directing users to a vast number of external PDF files hosted on various domains, likely to distribute malware or engage in SEO manipulation.

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://newpathorg.com/uploads/1/3/0/2/130288643/wixadorojisuxu.pdf
    • http://zavijowex.kuhni-msc09.icu/uploads/2020/01/27/dosesuxedede.pdf
    • http://connectthelotscamden.com/uploads/1/3/0/5/130543453/fulopafutiketop.pdf
    • http://mudtires.ca/uploads/1/3/0/2/130273899/66ba03108b0e.pdf
    • http://lauriekrauth.weebly.com/uploads/1/3/0/6/130603824/e3aa7190.pdf
    • http://alrummannursery.com/uploads/1/3/0/6/130603819/10721a31d8128a.pdf
    • https://gorobudokakolef.weebly.com/uploads/1/3/0/5/130539078/9341478.pdf
    • http://aliveandliving.com/uploads/1/3/0/5/130588237/6c555946d3b.pdf
    • http://lomopus.urologya.expert/uploads/2020/01/29/neluruw.pdf
    • http://closinggoals.com/uploads/1/3/0/4/130476684/9fef52.pdf
    • http://legacycreekgsmd.com/uploads/1/3/0/5/130547286/dusilibores.pdf
    • http://portabletoiletsmichigan.com/uploads/1/3/0/5/130538923/9667720.pdf
    • http://mebelengels.ru/uploads/2020/01/28/edf1177310a0.pdf
    • https://mabeboreguduxu.weebly.com/uploads/1/3/0/3/130313346/314569.pdf
    • http://actorheadshotphoto.com/uploads/1/3/0/5/130588731/milumu.pdf
    • http://spayedkoolie.com/uploads/1/3/0/4/130488387/130488387.html#eternal+palace+guide+tank
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013c1.bin
75a27d690a916aa1c8614fa6b3f69e4f8e36086083b6bdeb84e7911cea5553a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C1 8404 bytes
font_01_sfnt_off00007353.bin
0a19d3ec01c2bd5f2da2e654894ff9caac3df97291af1acb5ff150be3e6b34cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7353 18100 bytes

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