Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e727c589037a80…

MALICIOUS

PDF

37.2 KB Authoring application: LibreOffice
MD5: cda7c263e3fdec2b1387d1a9375e7359 SHA-1: 8df41b1caa51545820328bba5d2ed648501054a6 SHA-256: 19e727c589037a803e22672157b0b70a6a9346341486f6e37c68ce0d37c10910
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm, likely used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, aligning with the PDF_SEO_LINK_FARM heuristic.

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://plaid2pumps.com/uploads/1/3/0/3/130323531/fonosoze_rigutanag_loluvedelimivi.pdf
    • http://robb.site/uploads/1/3/0/5/130539676/kobiwupeparax-pakule-nadimu.pdf
    • http://kimchibabe.com/uploads/1/3/0/5/130589268/9816441.pdf
    • http://northeastohiodukes.com/uploads/1/3/0/6/130604430/909d23d9d11b80.pdf
    • https://lelofujimepijo.weebly.com/uploads/1/3/0/2/130289796/0df6baf3e0d724f.pdf
    • http://bellevistaassistedliving.com/uploads/1/3/0/5/130550790/roziwikuguluzara.pdf
    • http://kunufake.deevki.icu/uploads/2020/01/28/1440505.pdf
    • http://mnacupunctureclinics.weebly.com/uploads/1/3/0/3/130312983/8772903.pdf
    • http://nizkedane.com/uploads/1/3/0/6/130639423/tunekipen-zutanuzi-xunagikepemoj.pdf
    • http://seattleyouthbaseball.com/uploads/1/3/0/5/130588947/a7c34f.pdf
    • http://jettscreativezone.com/uploads/1/3/0/5/130538833/7533674.pdf
    • http://godimenofo.rbc-crypto.ru/uploads/2020/01/29/6acc65dbaf.pdf
    • http://gusuratoga.audiostart18.icu/uploads/2020/01/28/44052d806e1.pdf
    • http://menurotrin.ru/uploads/2020/01/29/35877d989.pdf
    • http://terraholdinggroup.com/uploads/1/3/0/4/130435553/74a3bc5.pdf
    • http://mintzathletics.com/uploads/1/3/0/4/130476098/5688671.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/6/130639679/130639679.html#yeh+mera+india+i+love+my+india+mp3+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014b0.bin
fb5e360242d564b089815d9fb18175296fe0325d90a5d2ae37b64decc73bb551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B0 8208 bytes

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