Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07fbb1cc8116315…

MALICIOUS

PDF

44.8 KB Authoring application: Smallpdf Desktop
MD5: 86762467f41e27e7023ee005ea623044 SHA-1: dbf807f58ffd8bd104d0832f9c83f864f9b65e60 SHA-256: d07fbb1cc81163156dc42ccc58b7bc8712284f6cce73fcb5e01e45008cc6992e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags it as phishing-related. The embedded URLs point to various PDF files hosted on different domains, suggesting a link farm designed to redirect users to potentially malicious content. No scripts were extracted from this sample.

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://mindguru.pro/uploads/2020/01/27/fb0092e7a50e95.pdf
    • http://tvoy-sharm.ru/uploads/2020/01/28/1398293.pdf
    • https://nigawavekew.weebly.com/uploads/1/3/0/6/130605275/xojozaworoni.pdf
    • http://tennisaguilar.com/uploads/1/3/0/6/130603782/1baea.pdf
    • https://tewozonixub.weebly.com/uploads/1/3/0/6/130604110/dakomopiledixagufi.pdf
    • https://voxosajizeta.weebly.com/uploads/1/3/0/5/130546434/9872266.pdf
    • http://santamariagestioninmobiliaria.com/uploads/1/3/0/5/130589125/4c4270974237ef.pdf
    • https://gefarotetuf.weebly.com/uploads/1/3/0/4/130483745/5e486f183fe0d48.pdf
    • http://kidigenal.ledy-boss.su/uploads/2020/01/29/286b9e5e19.pdf
    • https://vetijiruni.weebly.com/uploads/1/3/0/3/130379078/maxijijilidikud-lisufuvu-poxiwomidoziti.pdf
    • https://karinotiremovul.weebly.com/uploads/1/3/0/4/130489727/2699eeb81.pdf
    • http://fofolirej.my-smile.top/uploads/2020/01/27/4e99d7a.pdf
    • http://raisingouradventure.com/uploads/1/3/0/4/130476396/pikuso.pdf
    • https://bowofanamuxedik.weebly.com/uploads/1/3/0/4/130488181/kegilaki_sejabigigizam_judatonutemez_xodisusodu.pdf
    • http://piwip.audiostart32.icu/uploads/2020/01/28/xoxegubegimur.pdf
    • http://dahunoff.ru/uploads/2020/01/27/4757803.pdf
    • https://lenisokoba.weebly.com/uploads/1/3/0/3/130379246/balugas.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/5/130588459/130588459.html#libro+manos+que+curan

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00006028.bin
b6af1bfb7872efe326333d1d301252ce71a596650cd6d0ad9296d98da5047567		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6028 18688 bytes
font_00_sfnt_off0000153b.bin
34d7f543a058d60df615e96d5d2b92835630a24d6d1afe8bd22106fefe2cecea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153B 9000 bytes

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