Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed11a90479f09c93…

MALICIOUS

PDF

50.8 KB Authoring application: Adobe PDF Library 9.0
MD5: 2e9d070747a3239efba9943851f81423 SHA-1: ef072f14643c762ff95018ccc78cd1c89b641f1d SHA-256: ed11a90479f09c93427814cb7984e027648ef42b3ea598c19f51270a2ca6845a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, forming a link farm, which is a common technique for distributing malware. The heuristic 'PDF_SEO_LINK_FARM' and ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate malicious intent. The document body, though partially corrupted, mentions 'virtual assistant proposal sample pdf', suggesting a lure to download further malicious content disguised as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://tomsom81.com/uploads/1/3/0/3/130323172/xugamelinalil.pdf
    • http://xodi.progress-pay.ru/uploads/2020/01/27/d2d1a858f4a.pdf
    • http://nane.tami-tatami.pro/uploads/2020/01/29/kaxulurelutaweduf.pdf
    • http://roomrates.net/uploads/1/3/0/6/130621942/70de531e17a0.pdf
    • http://nuf.event55.ru/uploads/2020/01/27/vubevegigo-kapamagatimuba-guwuva.pdf
    • http://tamiymhealthandfitness.com/uploads/1/3/0/4/130436182/0974c.pdf
    • http://vubipo.mechtaenta.pro/uploads/2020/01/27/dumutopufumolew_toxusazonodogu_pewazumawejoma_ropegeto.pdf
    • http://myshop23.site/uploads/2020/01/29/vitimuzosoxuzib.pdf
    • http://therealestreya.com/uploads/1/3/0/2/130289774/notomagis.pdf
    • http://vabeachtrainer.com/uploads/1/3/0/5/130590295/genutozimutikal.pdf
    • http://pettoy.net/uploads/1/3/0/3/130323337/batuzugesotaj-pibuwojoj-nakalowuk.pdf
    • http://jafamul.topmusic.shop/uploads/2020/01/28/5783619.pdf
    • http://vig.sellercentral-amazon-avs.com/uploads/2020/01/28/bifijuwelineto_gupafonuw_wopovozexuzo.pdf
    • https://jolomiru.weebly.com/uploads/1/3/0/4/130490668/xabavitukezijudij.pdf
    • http://winadeluta.suitstaticmusic.com/uploads/2020/01/28/dodemaba-ruselitek-sojuku-losukasarasiso.pdf
    • https://nizegopopurox.weebly.com/uploads/1/3/0/2/130289345/8276658.pdf
    • https://xugefefen.weebly.com/uploads/1/3/0/2/130271001/586dd5.pdf
    • http://wumuzi.nbcoach.ru/uploads/2020/01/29/8701575.pdf
    • http://rini.krasiva24.com/uploads/2020/01/28/7150678.pdf
    • http://dekup.lariveracr.com/uploads/2020/01/27/ad13f3f7d7.pdf
    • http://gunixazo.zaem-onlain.info/uploads/2020/01/28/tenoz.pdf
    • http://hippychic.us/uploads/1/3/0/5/130538831/gororisamexiduz.pdf
    • http://denudatet.exale.pw/uploads/2020/01/28/1794025.pdf
    • http://xoxinose.gameknb.fun/uploads/2020/01/27/9c8d0306.pdf
    • http://guanjen.com/uploads/1/3/0/2/130287289/130287289.html#virtual+assistant+proposal+sample+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010a6.bin
10de55474e861d7da2eb1b10a807d5a270fa76ba8d37a946d394c3ff842d5adb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6 9188 bytes

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