Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb44641a317ff069…

MALICIOUS

PDF

44.0 KB Authoring application: LibreOffice
MD5: a85fec96db86f9e6465049dfe185dc21 SHA-1: 9d81697405cc04b0661d16b3dbae22e183f8c868 SHA-256: cb44641a317ff06982442c5fba8720d33c773db1014c371fe754ff2f8131eb30
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to installation manuals and URLs, reinforcing the lure aspect.

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://mainstreetmarketingusa.com/uploads/1/3/0/2/130288552/b10390df4dfe1.pdf
    • http://treeoflifecg.com/uploads/1/3/0/5/130588651/b450d1ff20f64.pdf
    • http://poolservicesarasota.com/uploads/1/3/0/4/130490328/9584736.pdf
    • http://zexukoxaz.shopdochoi.tech/uploads/2020/01/28/1170952.pdf
    • http://themindtrainerhypnosis.com/uploads/1/3/0/5/130551920/sadekisovem.pdf
    • http://mrsottocounselingcorner.com/uploads/1/3/0/5/130551739/fowowe.pdf
    • https://wugamurejitemu.weebly.com/uploads/1/3/0/4/130478360/kejarakivajali-pinubere.pdf
    • http://rubijepono.tandifac.tech/uploads/2020/01/28/542f8d5d.pdf
    • http://drvsmusicclasses.com/uploads/1/3/0/2/130287521/4734970.pdf
    • http://amada-aesthetik.weebly.com/uploads/1/3/0/5/130546923/loziripekuvuxarazuze.pdf
    • http://kipiluvavo.nkkredit.ru/uploads/2020/01/29/5503574.pdf
    • http://discoveryelectricbikes.com/uploads/1/3/0/5/130539022/migogalapuj.pdf
    • http://mugi.bangojango.me/uploads/2020/01/29/4127271.pdf
    • https://xopobilug.weebly.com/uploads/1/3/0/2/130272573/jedawegewu-pitalizigiz-jufapez-dupuwo.pdf
    • http://fuwa.magbaysportfishing.com/uploads/2020/01/28/ce434cbc21.pdf
    • http://sber-afla.info/uploads/2020/01/27/zolowobuxanota.pdf
    • http://klarathecow.com/uploads/1/3/0/2/130289272/475e0ecd3c009.pdf
    • http://djspizza1.com/uploads/1/3/0/4/130478067/130478067.html#micro+motion+elite+coriolis+meter+installation+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014a0.bin
0c121dbe7d9754346f5ade454c7cccc73210da453ebc63dd4e9961383c7b0b37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A0 7048 bytes

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