Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c2f5b8e49c5fbf…

MALICIOUS

PDF

38.4 KB Authoring application: Mobipocket Creator
MD5: 9b23f47dd8c80e008a884b6470d56733 SHA-1: f4558a9a722b68d906098ee24fcf1112793eb414 SHA-256: 24c2f5b8e49c5fbfd9520c62c8180a674126bce9956c501e98c99dccf138d1ad
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, forming a link farm. This is indicative of a phishing or malware distribution campaign, where the goal is to redirect users to malicious sites. The ClamAV detection and ML classifier strongly support its malicious nature. No scripts were extracted from this sample, but the sheer volume of outbound links suggests a high likelihood of directing users to further malicious content.

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://premierbv.com/uploads/1/3/0/3/130379474/lenipudusoz.pdf
    • http://domainchangers.com/uploads/1/3/0/7/130738647/37482ab19d6e6.pdf
    • http://realtimechallenges.com/uploads/1/3/0/5/130550982/895056.pdf
    • http://tenzo.me/uploads/1/3/0/5/130541031/sijuvepi.pdf
    • http://standrewarvada.com/uploads/1/3/0/7/130775378/3910560.pdf
    • http://baitpro.us/uploads/1/3/0/5/130588149/2457855.pdf
    • http://miriamdavies.com/uploads/1/3/0/7/130775222/diguv.pdf
    • http://paintandwinealbuquerque.com/uploads/1/3/0/3/130324170/6144882.pdf
    • http://mrsmalloy.com/uploads/1/3/0/5/130544131/9633337.pdf
    • http://trueleadershipconference.com/uploads/1/3/0/4/130488265/4491f439e383e65.pdf
    • http://compartete.com/uploads/1/3/0/2/130273735/wofetevobul-fazekopotilinu.pdf
    • http://morealestatebook.com/uploads/1/3/0/3/130323227/jigapowitinegu.pdf
    • http://bfes-sce-association.org/uploads/1/3/0/5/130588639/8378532.pdf
    • http://philsmattresspalace.com/uploads/1/3/0/6/130604393/wegudalumugazirofitu.pdf
    • http://musetech.site/uploads/1/3/0/3/130313803/nodapojamepitaxax.pdf
    • http://visvertier.com/uploads/1/3/0/6/130621814/6087907.pdf
    • http://steveslawnmowersales.com/uploads/1/3/0/6/130620512/8753442.pdf
    • http://keblemusic.co.uk/uploads/1/3/0/6/130639642/lezijuledi.pdf
    • http://mytwobreastfriends.net/uploads/1/3/0/3/130313120/ralimelinaweje-zitokusube-fikisiwina.pdf
    • http://beautifullybakedco.com/uploads/1/3/0/5/130547373/15f79.pdf
    • http://www.functionalgoods.co/uploads/1/3/0/6/130621695/nitoronufada.pdf
    • http://northcountyhumanresources.com/uploads/1/3/0/7/130740458/3179298.pdf
    • http://www.capehatterascoffee.com/uploads/1/3/0/6/130604658/dufifod.pdf
    • http://tastephiladelphia.net/uploads/1/3/0/5/130540085/nixot.pdf
    • http://yinghuangguojixinyuhao.br3h.com/uploads/1/3/0/8/130874580/130874580.html#repaso+de+tiempos+verbales+en+ingles
    • http://tenzo.me/uploads/1/3/0

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003338.bin
595ce6fe5b1a86d297dcb903f1a4cd5bf33ace82f3f3ab0338a4b91a4499b721		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3338 8332 bytes

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