Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f4e30bd44cd26fa…

MALICIOUS

PDF

35.0 KB Authoring application: Smallpdf Desktop
MD5: bbdfe764b3ed64b238c26b144686d059 SHA-1: bb5a8b0e4811ebd8bc746dbd52c7e90a5dcb8878 SHA-256: 4f4e30bd44cd26fa07a6138899f5b3c4ecb5247bae13f8c2adea167a6677642a
150 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text attempts to impersonate an Adobe Reader installer, likely to trick users into clicking the malicious links. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing and traffic redirection intent.

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://www.everdayitemtracker.com/uploads/1/3/0/4/130488213/mugaziwakolutaw-dopobos-jufuvowenonap-kipepotalidip.pdf
    • http://santanvalleycopperbasin.com/uploads/1/3/0/6/130622051/torenikoxux_finodinozedaru_labevamevi.pdf
    • http://locary.net/uploads/1/3/0/2/130288854/mokoder.pdf
    • http://poynorhealthandwellness.com/uploads/1/3/0/5/130539843/2300171.pdf
    • http://popshopsdemo.com/uploads/1/3/0/6/130603965/bupokimago_pevara_lemiludit_fuxemusariv.pdf
    • http://kingdom210.com/uploads/1/3/0/7/130776503/dapixufiwa-dufimoxufi-wonutiz-tifavelizafowa.pdf
    • http://julieonofrio.com/uploads/1/3/0/5/130539241/3789094.pdf
    • http://slubit.com/uploads/1/3/0/4/130435524/manutata-vekotim.pdf
    • http://acupunturavetbarcelona.com/uploads/1/3/0/2/130271030/tabuzotifozulo.pdf
    • http://elliotfisher.com/uploads/1/3/0/2/130292104/xuwejinadoz_rotewutefozud_viwabef.pdf
    • http://tommystrader.com/uploads/1/3/0/5/130588654/37dcfc22c3fb.pdf
    • http://bykatieblack.com/uploads/1/3/0/6/130640139/lisexalorixufojewud.pdf
    • http://faithworks4us.com/uploads/1/3/0/8/130813398/mizuvuwutewonime.pdf
    • http://yasinrahim.com/uploads/1/3/0/7/130739720/92543e2d57186f.pdf
    • http://nuohotel-zh.devsite-1.com/uploads/1/3/0/5/130543656/130543656.html#adobe+reader+dc+.exe+file+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ec4.bin
01417a3d9b9541394037c11937d09e7be9c56bf69991d2201bc49ca246b9bea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC4 7724 bytes

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