Malicious PDF — malware analysis report

Static analysis result for SHA-256 bccd0e98b27d5660…

MALICIOUS

PDF

36.8 KB Authoring application: Serif PagePlus First seen: 2021-09-13
MD5: ea01d277341764012254f2c5d2662b82 SHA-1: 92146087125169fb7298ef4a7dcb5b3c456c235b SHA-256: bccd0e98b27d566010abcdb125425ecbf2110e26a26459ae35600bf8128f874b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files hosted on Weebly, a technique often used for SEO poisoning or phishing. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of compromise, likely leading to further malicious content or phishing pages.

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://wumofotili.weebly.com/uploads/1/3/0/2/130274376/bitavopitobijamufiki.pdf In PDF document text
    • https://godobumi.weebly.com/uploads/1/3/0/3/130323705/dunubefatiguzase.pdfIn PDF document text
    • https://rabaxixubujoros.weebly.com/uploads/1/3/0/2/130288915/e914087854a35bb.pdfIn PDF document text
    • https://malidobatupi.weebly.com/uploads/1/3/0/5/130542872/2928439.pdfIn PDF document text
    • https://risakedix.weebly.com/uploads/1/3/0/2/130271083/a31ab4.pdfIn PDF document text
    • https://raxusesakiture.weebly.com/uploads/1/3/0/3/130324324/betomes.pdfIn PDF document text
    • https://pasorodaxek.weebly.com/uploads/1/3/0/5/130545742/levebototu.pdfIn PDF document text
    • https://gofeduxepo.weebly.com/uploads/1/3/0/4/130488994/sevorit_fomikukef_dakigaxilenes.pdfIn PDF document text
    • https://pozasope.weebly.com/uploads/1/3/0/2/130288589/mafaz.pdfIn PDF document text
    • https://wikixajuv.weebly.com/uploads/1/3/0/5/130539881/sutagewolovogatuw.pdfIn PDF document text
    • https://likapiwokegiti.weebly.com/uploads/1/3/0/5/130551839/sajijefukibaxi.pdfIn PDF document text
    • https://puroligarotilu.weebly.com/uploads/1/3/0/5/130551653/4e6ec7.pdfIn PDF document text
    • https://xobesejegusova.weebly.com/uploads/1/3/0/5/130551656/5320508.pdfIn PDF document text
    • https://tevuberujozoza.weebly.com/uploads/1/3/0/2/130288580/1686648fbd2.pdfIn PDF document text
    • https://magaluvajaxepol.weebly.com/uploads/1/3/0/3/130313388/jugamurosalitapunama.pdfIn PDF document text
    • https://gogorigurefora.weebly.com/uploads/1/3/0/4/130483953/130483953.html#igcse+biology+papers+pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000135e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135E 7592 bytes
SHA-256: 90b0f4e9a7ace6b62addf00a44c37e1644eaa6ed5a56da695d7f8a9889e2182f

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