Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d364278eb4d3ad3…

MALICIOUS

PDF

38.0 KB Authoring application: ImageMagick
MD5: ee793d26099975d99da4307c85c5c8bf SHA-1: 41ba0f54e2958491b68c483cd796eb82435ba46c SHA-256: 4d364278eb4d3ad3bfcb8458e8971b913fa34e2a14b1438fe1115f988a94ab39
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The critical PDF_SEO_LINK_FARM heuristic identified a large number of embedded external links pointing to other PDF files across various domains. This suggests a link farm or redirection strategy, likely for phishing or distributing further malicious content. The document body contains garbled text, indicating it is not intended for human consumption but rather as a container for these links.

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://techefi.com/uploads/1/3/0/4/130483745/59e4fb83440.pdf
    • http://www.northwoodsyouth.org/uploads/1/3/0/2/130289803/gemebawox.pdf
    • http://willslachance.com/uploads/1/3/0/6/130603926/buzajewobu-jazin-jiwuniboroz-moxiduduwup.pdf
    • http://alessandrarossmd.com/uploads/1/3/0/5/130543798/jubikigufodu-komilikeroxuvi-pewixegeb.pdf
    • http://opfee.net/uploads/1/3/0/4/130483728/milipexo-gufomuxeneto-mofutexixozup.pdf
    • http://mta-sts.mail.nicamap.com/uploads/1/3/0/8/130873921/72df8458a4da.pdf
    • http://zuiderhavendijkconcert.com/uploads/1/3/0/6/130639700/8499721.pdf
    • http://jeffhagemandesigns.com/uploads/1/3/0/2/130270812/905438.pdf
    • http://surprisingdiscoveries.com/uploads/1/3/0/6/130620479/92f2cad.pdf
    • http://myacexportfolio.com/uploads/1/3/0/7/130776814/386f12b750a4c16.pdf
    • http://www.oliviakiefer.com/uploads/1/3/0/5/130588244/wabopo.pdf
    • http://theperfectlight.info/uploads/1/3/0/7/130739557/sokofepa-sasobawexepib-fodowigik.pdf
    • http://techwheelhouse.com/uploads/1/3/0/4/130488091/8825978.pdf
    • http://oasiscancersupportsystem.com/uploads/1/3/0/6/130604498/e83ae4.pdf
    • http://www.smpoindexterllc.com/uploads/1/3/0/4/130488067/3346038d.pdf
    • http://centreelmos.com/uploads/1/3/0/6/130620773/623051eb.pdf
    • http://satusinikumpu.fi/uploads/1/3/0/4/130483866/lemawe.pdf
    • http://marcdyen.com/uploads/1/3/0/6/130639404/8785769.pdf
    • http://www.bellasbeautysupply1.com/uploads/1/3/0/8/130874232/vasuminipe.pdf
    • http://sta-66-99-58-207.ladse.org/uploads/1/3/0/5/130551880/130551880.html#cover+letter+for+university+student+example
    • http://techwheelhouse.com/upl

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000347c.bin
90cbdcd8db0a918e9aaf1980399da737550429d5df16e986efe1d3e79238669f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x347C 8504 bytes

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