Malicious PDF — malware analysis report

Static analysis result for SHA-256 e564513ba743bafb…

MALICIOUS

PDF

56.2 KB Authoring application: Smallpdf Desktop
MD5: 054f4f40f5b96622bd42281691869a10 SHA-1: 614ded706779af81dbe67e7503b81b38cd07b9a4 SHA-256: e564513ba743bafb8ceb80a979dffa769aae4aef309e8f3d0cda1d3bbd662563
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule, indicating a large number of external links. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs are likely part of a phishing or malware distribution scheme, aiming to redirect users to compromised or malicious sites.

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://mylydian.com/uploads/1/3/0/4/130436473/rumutofosegexanat.pdf
    • http://fitrition.com.au/uploads/1/3/0/2/130272278/586d39342f10de2.pdf
    • http://mrgn.marketing/uploads/1/3/0/6/130604940/a77d946c.pdf
    • http://mysss.ca/uploads/1/3/0/5/130588336/4462681.pdf
    • http://obediencejourney.com/uploads/1/3/0/2/130289019/rojapiroluv_paneso.pdf
    • http://silkroadsourcing.co/uploads/1/3/0/6/130605339/fogenonowinevur_vixugasetezibo.pdf
    • http://eastcoastnpl.org/uploads/1/3/0/4/130488158/9216ed91.pdf
    • http://tiffanycandles.net/uploads/1/3/0/2/130289277/ditezenifunewedi.pdf
    • http://locationstomap.com/uploads/1/3/0/6/130620854/nawowavubike-mumifamodu-zekegomoniwitul.pdf
    • http://promptremittance.net/uploads/1/3/0/6/130621643/9312477.pdf
    • http://aspccc.com/uploads/1/3/0/5/130588591/nuxili.pdf
    • http://nashobavalleyextractco.com/uploads/1/3/0/3/130379397/130379397.html#bacaan+surat+yasin+dalam+tulisan+latin

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015aa.bin
8dcc620b0e12c39a4a3a97b15cc186d81f6f390eaf66377ca92994b50d1105f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15AA 10316 bytes

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