Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c1bfa49cf181537…

MALICIOUS

PDF

42.5 KB Authoring application: ImageMagick First seen: 2021-06-04
MD5: 94b93b0557ce0cae0d4be55b8b06e4e3 SHA-1: 04a31532797141ec0f8540bbb9f4ba4c0c20a0ca SHA-256: 8c1bfa49cf18153740517d88ba36e327f30f44035016ea9bf5cb241609112597
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to Weebly-hosted PDF files, indicating a link farm or SEO spam campaign. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly suggest malicious intent. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of malicious activity, likely serving as a distribution mechanism for further content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://zobegubitabid.weebly.com/uploads/1/3/0/2/130289204/9891148.pdf In PDF document text
    • https://jajajufepiwuga.weebly.com/uploads/1/3/0/3/130323342/e9afe3055.pdfIn PDF document text
    • https://pajoridavokaze.weebly.com/uploads/1/3/0/5/130543494/fc337a40f32c.pdfIn PDF document text
    • https://vagugawusa.weebly.com/uploads/1/3/0/4/130483736/2677115.pdfIn PDF document text
    • https://vuvipumudupe.weebly.com/uploads/1/3/0/5/130551907/genilorubodafak-pikowizapelalim.pdfIn PDF document text
    • https://gasemugofitip.weebly.com/uploads/1/3/0/3/130379213/nibujonomosezun-delijemugudixa-vorage.pdfIn PDF document text
    • https://rogiratujoga.weebly.com/uploads/1/3/0/2/130270813/3f7f49fa.pdfIn PDF document text
    • https://lovewojikokutu.weebly.com/uploads/1/3/0/5/130550841/6661386.pdfIn PDF document text
    • https://zuzesazubaj.weebly.com/uploads/1/3/0/5/130551096/nubusa.pdfIn PDF document text
    • https://noroxakupize.weebly.com/uploads/1/3/0/4/130435649/ec51877fbdd94ee.pdfIn PDF document text
    • https://pepajivut.weebly.com/uploads/1/3/0/5/130542983/0af11830c0.pdfIn PDF document text
    • https://mukotonenadefe.weebly.com/uploads/1/3/0/2/130272318/ab77aca47c65652.pdfIn PDF document text
    • https://jolejededon.weebly.com/uploads/1/3/0/2/130289535/ff88bd848c.pdfIn PDF document text
    • https://jawekedebajoz.weebly.com/uploads/1/3/0/3/130324092/130324092.html#best+abductor+strengthening+exercisesIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1312 7520 bytes
SHA-256: df7d237bc63c54c37554094cd452c6c4c21eaa420e487938d84713ec4be6ca66

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