Malicious PDF — malware analysis report

Static analysis result for SHA-256 26cc856cfaabf4ac…

MALICIOUS

PDF

44.7 KB Authoring application: Serif PagePlus First seen: 2020-09-07
MD5: 26870cc253a574fc82e8ad8ffd987c4d SHA-1: e6000e5360c68e99b853e438eee25a444e79dcbf SHA-256: 26cc856cfaabf4ac5d1216e1438f9eb8a834781d8812e30625016ae4d19c2f41
192 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or distribution mechanism. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly suggest malicious intent, likely related to phishing or traffic redirection. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.justmakemehappy.co.uk/uploads/1/3/0/5/130540208/2991332.pdf In PDF document text
    • http://www.justinllovesjunk.com/uploads/1/3/0/3/130313212/xuxisagomuxufanetuf.pdfIn PDF document text
    • http://tradingpinshub.com/uploads/1/3/0/3/130313166/lanuvurer.pdfIn PDF document text
    • http://myreflectar.com/uploads/1/3/0/6/130604658/nenifeg_jagufelawobaw_wuvonabijifi.pdfIn PDF document text
    • http://www.omgcatburrito.com/uploads/1/3/0/4/130435966/128609eade0.pdfIn PDF document text
    • http://olympicdiscoverytrail.net/uploads/1/3/0/6/130603834/fb11f905ad8.pdfIn PDF document text
    • http://drunkmonkey.ca/uploads/1/3/0/7/130775744/mejenojobetidozigo.pdfIn PDF document text
    • http://www.nauramusic.com/uploads/1/3/0/6/130605253/5187624.pdfIn PDF document text
    • http://midland-fox.com/uploads/1/3/0/5/130588923/b644e691af3c010.pdfIn PDF document text
    • http://hucklebean.com/uploads/1/3/0/5/130589218/f0afcc41dd1a2.pdfIn PDF document text
    • http://nashbw.info/uploads/1/3/0/6/130640049/resif_lubikovaka.pdfIn PDF document text
    • http://blackbeardeervalley.com/uploads/1/3/0/7/130739680/5852230.pdfIn PDF document text
    • http://coloradomountainelopement.com/uploads/1/3/0/7/130739883/9650181.pdfIn PDF document text
    • http://www.yourvirtualta.com/uploads/1/3/0/5/130550833/pixevorofaki.pdfIn PDF document text
    • http://26and2.club/uploads/1/3/0/4/130483737/fadazik.pdfIn PDF document text
    • http://crapcocktailclub.com/uploads/1/3/0/5/130589101/kogalunoruke.pdfIn PDF document text
    • http://aromascrips.com/uploads/1/3/0/5/130543158/227b29f61c53074.pdfIn PDF document text
    • http://www.lisbethomeandstyle.com/uploads/1/3/0/4/130483512/6516615.pdfIn PDF document text
    • http://inspireddesignshandmadegifts.com/uploads/1/3/0/3/130379798/sadefoxiganenug_botatise_texuraroti_pokasu.pdfIn PDF document text
    • http://floridaforeclosuredefenselawyers.com/uploads/1/3/0/3/130313191/e19be12454d6.pdfIn PDF document text
    • http://ahfire.com/uploads/1/3/0/5/130588515/7604771.pdfIn PDF document text
    • http://mail.urlaub-ausseerland.at/uploads/1/3/0/8/130874219/jufapixefigusewona.pdfIn PDF document text
    • http://ashleyjuliacreative.com/uploads/1/3/0/8/130873794/29de5.pdfIn PDF document text
    • http://wilmingtonladiesteawalk.org/uploads/1/3/0/5/130542948/130542948.html#acetal+or+hemiacetal+carbonIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E33 2860 bytes
SHA-256: 4d9ec2aec8f1ca6bebe1b56492fd55a77bba3a6e98efb76508c1b835d4eb9912
font_01_sfnt_off00004ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE5 8320 bytes
SHA-256: 9a7611c4c310accd68f74d9b441b76342d22266a17cd2bdb742e1f2c58a89930

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