Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba4f5c6fb8a15a4…

MALICIOUS

PDF

31.0 KB Authoring application: ImageMagick
MD5: 25580b01a00f0937371cac8a8a3198db SHA-1: e5a0b82fa774e698a728862cf6695e64d39d68bb SHA-256: dba4f5c6fb8a15a4391ecbfe24e69c5184aac39458af6d9c05a539b8d225c5eb
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This technique is commonly used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, aligning with the PDF_SEO_LINK_FARM heuristic. No scripts were extracted from this sample.

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://civilsystemsinc.com/uploads/1/3/0/7/130739261/nugovelibunidol.pdf
    • http://www.bluestockpm.com/uploads/1/3/0/6/130603866/07fdc9c2e44f.pdf
    • http://fit4aging.com/uploads/1/3/0/8/130813115/6734553.pdf
    • http://vinehub.online/uploads/1/3/0/6/130605432/resiresar_duvinajamupuf_nojimenurinudo.pdf
    • http://newcreditfirstnation.com/uploads/1/3/0/5/130541944/vanave.pdf
    • http://tehditistihbarati.org/uploads/1/3/0/2/130289179/8389997.pdf
    • http://krishnaandnatansh.com/uploads/1/3/0/6/130620609/8656667.pdf
    • http://cuttingedgesebringfl.com/uploads/1/3/0/2/130271111/kugojuw.pdf
    • http://draftav.com/uploads/1/3/0/4/130476158/81a508a876d.pdf
    • http://mysoulsingsstudio.org/uploads/1/3/0/4/130488759/wamiwedamirin.pdf
    • http://centerofsacredpassage.com/uploads/1/3/0/4/130477131/8956506.pdf
    • http://nunyabeeswax.net/uploads/1/3/0/5/130547846/koxav.pdf
    • http://staytruenorth.com/uploads/1/3/0/5/130590162/8546716.pdf
    • http://adiosdebt.com/uploads/1/3/0/5/130538836/8afe3378f08.pdf
    • http://theadvertemporium.com/uploads/1/3/0/8/130873922/turukelom.pdf
    • http://monasterios.net/uploads/1/3/0/6/130639611/6432032.pdf
    • http://pxture.it/uploads/1/3/0/4/130478760/busakunab_kopato_wubejezu_mabilajuvelu.pdf
    • http://mtgileadbaptistchurch.com/uploads/1/3/0/4/130489020/318696.pdf
    • http://www.nelsonsoutdoors.com/uploads/1/3/0/8/130873709/lujadadozawano.pdf
    • http://dlikiliprojectandservices.co.za/uploads/1/3/0/8/130814193/xoxoxed_pasopu_sogog_lutuwolob.pdf
    • http://mail.kurteriksen.com/uploads/1/3/0/7/130776350/kajonofomokaxirov.pdf
    • http://mothernaturestruth.com/uploads/1/3/0/4/130475892/3249024.pdf
    • http://ghcrew.com/uploads/1/3/0/5/130543468/futobifunozopi.pdf
    • http://adenova.es/uploads/1/3/0/2/130274330/7573722.pdf
    • http://haiyi-americaniahotel.devsite-1.com/uploads/1/3/0/6/130605396/130605396.html#buffalo+wild+wings+chicken+caesar+salad+nutrition+facts
    • http://mothernaturestruth.com/uploads/1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001aae.bin
2bdec025fef55dc5854e9a6f8df59996b71b9b7509f0816fa273c63366270998		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AAE 5916 bytes

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