Malicious PDF — malware analysis report

Static analysis result for SHA-256 016e52c9748a0971…

MALICIOUS

PDF

44.1 KB Authoring application: pdf-parser
MD5: ad00df93bf3f7e3938a8c41bf357648a SHA-1: 680146141156585272ba3eca5f9de84ec4b50f21 SHA-256: 016e52c9748a0971817a538980942684062cda565dfc9899ddb2d70a40c33635
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, directing users to multiple PDF files hosted on different domains. This behavior is indicative of SEO spam or a phishing campaign aiming to drive traffic to malicious or deceptive content. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://waylessepoxyflooring.com/uploads/1/3/0/6/130604527/1272736.pdf
    • http://facialplasticsurgery.tips/uploads/1/3/0/2/130287493/faburufawojebol.pdf
    • http://cnymariancenter.net/uploads/1/3/0/2/130272369/newisiwu_sekoneku_razupikuk.pdf
    • http://solerconsulting.com/uploads/1/3/0/6/130604765/bodexijokawopem_metizemezip_talomeganedag_menupixavoli.pdf
    • http://relaysecurity.com/uploads/1/3/0/4/130488850/130488850.html#accountant+cover+letter+sample+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010cb.bin
655166f23cf1b22f9bac02544feb881d1ff51dda6cdcb4439459c6eaddddc5eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB 8556 bytes

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