Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf5409668a92b9c…

MALICIOUS

PDF

103.8 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: 45ea3f613c2de8700dbec0911e7a4f94 SHA-1: b8b9bf098e9b876615cffd95eb9bca510452284d SHA-256: 2cf5409668a92b9ceb493cd302d6b362a4ccd06813d2ffe3555eb82febfebc6c
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This technique, identified by the PDF_SEO_LINK_FARM heuristic, is commonly used to distribute malicious content or redirect users to phishing sites. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the malicious intent. The document body itself appears to be corrupted or contains heavily obfuscated text, but the presence of numerous external links is the primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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://themanymes.com/uploads/1/3/0/5/130542922/2509bf97a7e820.pdf In PDF document text
    • http://milkandhoneystyletx.com/uploads/1/3/0/4/130476244/8538857.pdfIn PDF document text
    • http://mx.glasshousestudiostx.com/uploads/1/3/0/2/130272318/1649250.pdfIn PDF document text
    • http://bibledaily.com/uploads/1/3/0/2/130289721/dumivoguroref.pdfIn PDF document text
    • http://projectforereach.com/uploads/1/3/0/7/130738890/mefipurifu_veroz.pdfIn PDF document text
    • http://yecmonty.com/uploads/1/3/0/6/130603995/tutosuvunig.pdfIn PDF document text
    • http://chirinodentalclinic.net/uploads/1/3/0/6/130620998/tukel.pdfIn PDF document text
    • http://www.ncpsports.info/uploads/1/3/0/5/130590770/fojow.pdfIn PDF document text
    • http://bellarineearthworks.net/uploads/1/3/0/8/130874153/fegabapobatoverate.pdfIn PDF document text
    • http://isaga-crt.com/uploads/1/3/0/7/130776262/budipa.pdfIn PDF document text
    • http://iweargreatness.com/uploads/1/3/0/3/130323972/8886341.pdfIn PDF document text
    • http://gaskinsgadgets.com/uploads/1/3/0/7/130776754/3da62d.pdfIn PDF document text
    • http://surreyeventplanners.com/uploads/1/3/0/7/130739495/sanovobive.pdfIn PDF document text
    • http://www.dinaneumann.net/uploads/1/3/0/8/130813849/94f7aba44e464.pdfIn PDF document text
    • http://www.lebensfunke.at/uploads/1/3/0/7/130775704/kepodo.pdfIn PDF document text
    • http://zerkim.com/uploads/1/3/0/5/130551176/8b29c9bdf46.pdfIn PDF document text
    • http://stuffstories.com/uploads/1/3/0/6/130640194/pederifim.pdfIn PDF document text
    • http://judgeammendola.com/uploads/1/3/0/6/130604359/7870557.pdfIn PDF document text
    • http://crxo.com/uploads/1/3/0/5/130589267/funidosebiv.pdfIn PDF document text
    • http://oscarchavezphotography.net/uploads/1/3/0/2/130271209/4959915.pdfIn PDF document text
    • http://greenville-treeservice.com/uploads/1/3/0/5/130551218/xaduruxigufu_nebesipeges.pdfIn PDF document text
    • http://sweetcaities.com/uploads/1/3/0/4/130435726/vixolanuvujeto-jerapurebif-tugozokozufup-soweponedokid.pdfIn PDF document text
    • http://belladesgagnes.com/uploads/1/3/0/4/130490277/9531558.pdfIn PDF document text
    • http://weddingproct.com/uploads/1/3/0/7/130739291/tapulibowusazot.pdfIn PDF document text
    • http://adsl-63-204-18-47.benefitplans.org/uploads/1/3/0/6/130620931/130620931.html#language+acquisition+theory+quizletIn PDF document text
🗂 Part of campaign: crxo.com 3 samples

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1829 9696 bytes
SHA-256: e3e1530160ef1c7f8d9b9fd73754e514ebff08b662407d71f662ba714ab434bf

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