Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7fa8de367ac270f…

MALICIOUS

PDF

45.0 KB Authoring application: LibreOffice Draw
MD5: ef76dec34212f313d39a351a1442e129 SHA-1: fe4c4a57b68475bc1b954d0c4d71e157e2934272 SHA-256: a7fa8de367ac270f949cdc70b000409c70499612369fd5aa653ec3cea54b3cde
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall, suggesting a phishing or malicious redirection intent. The document body is heavily obfuscated and unreadable, but the presence of numerous links points towards a strategy of directing users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://kidscreativestudio.com/uploads/1/3/0/6/130621754/denudafavoji.pdf
    • http://ah1.life/uploads/1/3/0/8/130874010/tusugufivefibutukelu.pdf
    • http://penguinjournal.online/uploads/1/3/0/6/130605168/69ba29.pdf
    • http://independentadultcarehomeassociation.com/uploads/1/3/0/7/130739373/jarudopekuwolonuzed.pdf
    • http://h8terade.com/uploads/1/3/0/6/130604724/7250543.pdf
    • http://www.cturology.com/uploads/1/3/0/3/130323412/legeme-pafiginu-pinugolabifavar.pdf
    • http://nshoilpurifier.com/uploads/1/3/0/7/130776587/zufogibewawivifuri.pdf
    • http://hostmaster.myholidayplace.co/uploads/1/3/0/6/130639922/luzamifugasefe_newimafabof_bakuwadifax_xubuziga.pdf
    • http://roelboekel.com/uploads/1/3/0/7/130738852/557650.pdf
    • http://scubasassphotography.com/uploads/1/3/0/6/130604010/tumozujopizegesu.pdf
    • http://remedleaf.com/uploads/1/3/0/5/130545260/5e3350.pdf
    • http://www.godbody4eva.com/uploads/1/3/0/8/130873984/39eb89971c.pdf
    • http://mx.musicadventure.net/uploads/1/3/0/2/130272330/1515064.pdf
    • http://www.tamdistrictfinearts.org/uploads/1/3/0/4/130435785/nulat-rurepamido.pdf
    • http://iamchelseaspeaks.com/uploads/1/3/0/6/130621294/312f4ac.pdf
    • http://triumphantlawnandlandscapeservices.com/uploads/1/3/0/6/130621353/4795701.pdf
    • http://globalabilities.org/uploads/1/3/0/6/130639883/xaxixotilej.pdf
    • http://medicaleducationupdate.net/uploads/1/3/0/5/130543369/suwotut-vufibegujegi.pdf
    • http://consors.org.uk/uploads/1/3/0/4/130483632/nomifabuwasa.pdf
    • http://lg0lr.slpny.com/uploads/1/3/0/2/130272389/130272389.html#esllibrary.com+grammar+practice+worksheets+past+perfect+tense
    • http://roelboekel.com/upload

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000038b9.bin
c374740700516b41f218ce1f3063ed30c57c5df665187242c67f0d0be227b05e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38B9 16364 bytes
font_01_sfnt_off00005129.bin
90548696f2f9765d5e0c953ec03765ea04e5e8ea413650a42dbd80c5c297697e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5129 7768 bytes

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