Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d136fc1fc3c90d4…

MALICIOUS

PDF

43.5 KB Authoring application: Nitro PDF
MD5: 5bb4240bb1afcf40da3de66670a68637 SHA-1: 166075d0425c373a56d5277eb932125c0de5b7ff SHA-256: 4d136fc1fc3c90d40c6abf8bc76aba37f7ff9992852f958a91dbde473069319d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents across numerous domains. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute phishing content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://fisotev.parfumsoo.ru/uploads/2020/01/28/7593222.pdf
    • http://adacreatives.com/uploads/1/3/0/4/130476035/gotegixudowabakidiz.pdf
    • http://zojisir.audiostart36.icu/uploads/2020/01/28/puvatapupuv.pdf
    • http://trawallaprimary.com/uploads/1/3/0/5/130551160/9745473.pdf
    • http://crystalstrykercreative.com/uploads/1/3/0/6/130604838/5bb12b766c8b48f.pdf
    • http://metrika.agency/uploads/2020/01/28/xalujif.pdf
    • http://sume.rucrime.top/uploads/2020/01/27/4482232.pdf
    • http://tenur.zorfa.icu/uploads/2020/01/27/8234491.pdf
    • http://bodybrainiac.shop/uploads/1/3/0/5/130544672/7834604.pdf
    • http://kogoluvami.easygo.tech/uploads/2020/01/27/burozofugemamed.pdf
    • http://homecookingbook.com/uploads/2020/01/29/16982613d73.pdf
    • http://kodu.mega-blog7.ru/uploads/2020/01/28/joferarirum.pdf
    • https://jizidovixob.weebly.com/uploads/1/3/0/4/130476344/lewibosekobuv.pdf
    • http://guzeke.lifecreditus.ru/uploads/2020/01/29/c28feab52.pdf
    • http://kevindaisy.com/uploads/1/3/0/2/130287960/tivib_fewigigekajenel_botojumomo.pdf
    • http://wubalemixu.albertoleno.com/uploads/2020/01/28/3352565.pdf
    • http://vus.sanacomounamanzana.com/uploads/2020/01/29/8866878.pdf
    • http://vexewon.admventures.tech/uploads/2020/01/28/kimejel_kujovisilox_zizufemedero.pdf
    • https://ferukalaf.weebly.com/uploads/1/3/0/5/130539265/wavolen.pdf
    • http://svea1988.com/uploads/1/3/0/2/130271030/mobafijakudusam.pdf
    • http://394-rmcp2010ft20r0.oneic.com/uploads/2020/01/29/5096688.pdf
    • http://finelinesf.com/uploads/1/3/0/5/130544672/168fbc42c.pdf
    • http://deraadgevers.com/uploads/1/3/0/6/130604207/130604207.html#cahier+de+lecture+boscher+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001708.bin
5489bbae9f5724bfaa80be93a9aeb61139838b3e1472f1686e970c9a74a06be3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1708 10692 bytes

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