Malicious PDF — malware analysis report

Static analysis result for SHA-256 514db348cd8fb61c…

MALICIOUS

PDF

40.8 KB Authoring application: LibreOffice Draw
MD5: 0989bc89a0f56db1f7065fc421747169 SHA-1: dfe96f16908a34639209b6c82429a0278eb51c3a SHA-256: 514db348cd8fb61c09872f072f9bbbc7edf4cfc7dd01e8bd804feb59b1f5b0b8
150 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The primary lure appears to be a fake ultrasound report, with the embedded links likely leading to further malicious downloads or phishing sites. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a link farm designed to distribute malware.

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://apkzebra.com/uploads/1/3/0/6/130639632/1208867.pdf
    • http://aimztruly.com/uploads/1/3/0/6/130639591/pijipaj-xuwupajene-danagedovutuxok-pivuwe.pdf
    • http://claudiapaur.weebly.com/uploads/1/3/0/6/130640162/8562634.pdf
    • http://mijaliscogrill2.com/uploads/1/3/0/5/130547069/536269.pdf
    • http://muthacluckaz.com/uploads/1/3/0/3/130379798/e354b.pdf
    • http://2208marinapalms.info/uploads/1/3/0/5/130588266/84b0ade8a.pdf
    • http://landmarkenglish.opole.pl/uploads/1/3/0/6/130640227/67d3e014414e0.pdf
    • http://audio-start20.icu/uploads/2020/01/28/mipatitofilaki_fatubediro_lapupagora.pdf
    • http://advancedpaintpreparation.net.au/uploads/1/3/0/5/130588864/sesugipekage_tibodime.pdf
    • http://mysticstudiosllc.biz/uploads/1/3/0/6/130620776/manekoxaxek-mugodasu.pdf
    • https://dobujiwade.weebly.com/uploads/1/3/0/4/130477048/nigewevi.pdf
    • http://actorheadshotphoto.com/uploads/1/3/0/5/130543310/5307495.pdf
    • http://perimes.ru/uploads/2020/01/28/wopikoxekenapevu.pdf
    • http://naturalsforthenatural.com/uploads/1/3/0/5/130551019/8641627.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/3/130379488/130379488.html#ultrasound+report+of+16+week+fetus

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013f6.bin
d7563dcafc4e80de95d8d4db1349885287799a9a6642533bd14ec6b95f2f911f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F6 8256 bytes

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