Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c71b835387f243…

MALICIOUS

PDF

40.5 KB Authoring application: Soda PDF
MD5: 4d0e936b64e519bf35e8cee349eaf5cf SHA-1: 53c4dcabd876dc1c36c20cbfa75a351bf314d4fc SHA-256: 69c71b835387f243698d32e3014992298e93b9acc117ba5af54a0a529f275517
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, exhibiting a critical heuristic for a PDF link farm. The document contains a large number of embedded URLs pointing to external PDF files, suggesting a tactic to manipulate search engine results or distribute additional malicious content. No scripts were extracted, but the presence of numerous external links is a strong indicator of malicious intent.

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://6000hudson.com/uploads/1/3/0/6/130605178/683cbcbb53b159.pdf
    • http://zajigadad.zoomroom63.ru/uploads/2020/01/27/5863cf6b8be7549.pdf
    • http://jejax.market-lm.com/uploads/2020/01/27/fc10fe99.pdf
    • http://foundedontruth.com/uploads/1/3/0/6/130621412/3139940.pdf
    • http://georgiacrook.co.uk/uploads/1/3/0/3/130379590/54e1b8f1.pdf
    • http://cimisupport.com/uploads/1/3/0/5/130590436/3318412.pdf
    • http://tufazavezo.office-msk.ru/uploads/2020/01/29/bofogibexazoru-kowuni-lorijurevipo-gizekofiwatupu.pdf
    • http://drivebeehive.com/uploads/1/3/0/6/130621521/kuvajufimed.pdf
    • http://cathyhepworth.com/uploads/1/3/0/5/130589313/zeminudenenolaref.pdf
    • https://jofikovevaja.weebly.com/uploads/1/3/0/5/130539871/f29becb1a52b96b.pdf
    • https://baxodexuw.weebly.com/uploads/1/3/0/3/130313098/1d2308e8dfef3.pdf
    • http://undiscoveredmuas.org/uploads/1/3/0/2/130273899/kulutubivavumafe.pdf
    • http://sagovifa.2bratika.ru/uploads/2020/01/29/1186004.pdf
    • http://mhetheseries.com/uploads/1/3/0/4/130488446/1fbbe02a0177e2.pdf
    • http://ninefortyfilms.com/uploads/1/3/0/5/130550857/futebo.pdf
    • http://lifedesignconcierge.com/uploads/1/3/0/5/130588207/duzanerajojof.pdf
    • http://woodlandstuition.com/uploads/1/3/0/5/130539449/130539449.html#best+joomla+templates+for+school

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000161d.bin
096e19047d66a4b5c919a7d0f5ef4b4b29a8a96e2fe922ad2a6f7026bacc5d63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x161D 8592 bytes

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