Malicious PDF — malware analysis report

Static analysis result for SHA-256 813bf7f367168b9f…

MALICIOUS

PDF

44.0 KB Authoring application: Nitro PDF
MD5: 7bcf3a48e57b32e4e76bd46ecd8a5095 SHA-1: c36823cdfcc82f98b03747fdade0e57d87fb54b1 SHA-256: 813bf7f367168b9ff38ef5e66425f6ec5241838e6962ca18e8876cac2b7d56be
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to other PDF files, indicative of a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, pointing to potential second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://globalwarming1.com/uploads/1/3/0/6/130604202/bewipazag.pdf
    • http://goget.social/uploads/1/3/0/5/130547078/f375a9648cf.pdf
    • http://lastfrontiermusic.com/uploads/1/3/0/2/130288006/647158.pdf
    • http://atlantametromobility.com/uploads/1/3/0/5/130545557/ae56817b8.pdf
    • http://redtopdesigns.com/uploads/1/3/0/6/130639242/814399.pdf
    • https://sizagimajavi.weebly.com/uploads/1/3/0/2/130272295/763647.pdf
    • http://kissbotr.com/uploads/1/3/0/5/130588307/dazekagamusif.pdf
    • https://dezasisezalodi.weebly.com/uploads/1/3/0/2/130287943/wodoxobomusazar_xexidipi_kabata_pugowakobanaja.pdf
    • http://bridalgownsnh.com/uploads/1/3/0/6/130620640/dfab584cfca3.pdf
    • http://sa-machine-learning.org/uploads/1/3/0/6/130639599/samajodexajixemov.pdf
    • http://570dj.com/uploads/1/3/0/3/130313360/zowerigube_tibimasak_dusorez.pdf
    • http://rogerspma.com/uploads/1/3/0/5/130550700/3272067.pdf
    • http://jy-la.org/uploads/1/3/0/5/130588845/zotuzuzuzuvuwep-ropexudo-zobaliluvipas-kazimelovet.pdf
    • http://thewateringcansupply.com/uploads/1/3/0/4/130488993/86724.pdf
    • http://nilalo.asolar.shop/uploads/2020/01/29/3255404.pdf
    • http://neibaurart.com/uploads/1/3/0/5/130544898/sezotes.pdf
    • http://novellaproposals.com/uploads/1/3/0/6/130639418/7009791.pdf
    • http://smart-k9.com/uploads/1/3/0/2/130289161/lakowotofapel.pdf
    • http://villa-r.ru/uploads/2020/01/28/poduzeguf-zumuratokevif-bibujiwose-zevobon.pdf
    • http://openmeadowfarms.com/uploads/1/3/0/6/130639591/kuregizof.pdf
    • http://manexpacheco.com/uploads/1/3/0/4/130476089/455eb6a5a21f.pdf
    • http://beridol.holybirdsoftware.com/uploads/2020/01/28/0f2cf6c432.pdf
    • http://mirrorsireland.com/uploads/1/3/0/2/130288427/8822908.pdf
    • http://sumner167.com/uploads/1/3/0/3/130379474/mebukawo.pdf
    • http://newkindlife.com/uploads/1/3/0/2/130274028/130274028.html#bahubali+1+tamil+movie++hd+print

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000018d5.bin
7c481d69a3e3e497345ac333b3d051463e5c11fa2938abc6acfb8d69c9cf3b03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18D5 8576 bytes

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