Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed0ea41041dbce6…

MALICIOUS

PDF

44.1 KB Authoring application: OpenOffice Draw
MD5: fc9af08afff5317fb922bab1d401d8cf SHA-1: 380c5af1e6bc3ddaa16dd074b0b35eadcff7a640 SHA-256: 1ed0ea41041dbce63c56d57919ba46e3e85724fd2db85aa2e728fd9749dc8acd
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 links to external PDF files, a technique commonly used for SEO spam or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies the mass linking behavior, with the primary domain being 'rexinkscreenprinting.com'. No scripts were extracted, and the document body content is heavily obfuscated and unreadable.

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://rexinkscreenprinting.com/uploads/1/3/0/4/130475981/6432498.pdf
    • http://mangumcourtyards.com/uploads/1/3/0/7/130776611/6222686.pdf
    • http://seniors1stfinancial.com/uploads/1/3/0/2/130273993/paxokifuxebududeril.pdf
    • http://www.onesimplyiris.com/uploads/1/3/0/7/130776239/2405895.pdf
    • http://www.bloomfieldas.com/uploads/1/3/0/7/130739964/mixezug-lasamados.pdf
    • http://zaldivarvazquez.com/uploads/1/3/0/7/130740389/ramozur.pdf
    • http://letstradeshirts.com/uploads/1/3/0/5/130588923/xelavuwaruwi-nevovaposasit-belij-jawivukonak.pdf
    • http://israeling.net/uploads/1/3/0/6/130640070/xebaxegerotag.pdf
    • http://heloisecrista.com/uploads/1/3/0/5/130589360/vanavuzesorogus.pdf
    • http://backcountryvibes.com/uploads/1/3/0/7/130739381/favin-gekitagaxakev-rasuvelijudevup.pdf
    • http://eaglestudent.org/uploads/1/3/0/3/130323516/3013336.pdf
    • http://rss-me.com/uploads/1/3/0/7/130740211/6161623.pdf
    • http://sharemycgdstory.com/uploads/1/3/0/4/130476462/1776961.pdf
    • http://shc-ilc.hct.ac.ae/uploads/1/3/0/7/130775632/289a13bfb.pdf
    • http://calregs.savethebear.org/uploads/1/3/0/4/130476157/kodofevudito.pdf
    • http://pinkfridays.org/uploads/1/3/0/5/130551019/24249ce47c.pdf
    • http://neubacher.vafercapital.com/uploads/1/3/0/4/130476589/db65053cb27.pdf
    • http://menongoldstein.com/uploads/1/3/0/5/130590561/8282933.pdf
    • http://peaksmobile.com/uploads/1/3/0/5/130589099/jojut.pdf
    • http://muscatmassage-service.com/uploads/1/3/0/7/130776225/felime-lipizixeb.pdf
    • http://nocoboatcharters.com/uploads/1/3/0/4/130489222/190c2a86.pdf
    • http://smarty-hotels-de.devsite-1.com/uploads/1/3/0/8/130814448/130814448.html#names+of+12+cranial+nerves+in+order
    • http://eaglestudent.org/up

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004da1.bin
e71fa41d2514148b2f5bcb78715c52b292a9cbc343c9cfc505fb440df6ff1fc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DA1 7520 bytes

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