Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7fa8de367ac270f…

MALICIOUS

PDF

45.0 KB Authoring application: LibreOffice Draw First seen: 2020-09-24
MD5: ef76dec34212f313d39a351a1442e129 SHA-1: fe4c4a57b68475bc1b954d0c4d71e157e2934272 SHA-256: a7fa8de367ac270f949cdc70b000409c70499612369fd5aa653ec3cea54b3cde
192 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 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 In PDF document text
    • http://ah1.life/uploads/1/3/0/8/130874010/tusugufivefibutukelu.pdfIn PDF document text
    • http://penguinjournal.online/uploads/1/3/0/6/130605168/69ba29.pdfIn PDF document text
    • http://independentadultcarehomeassociation.com/uploads/1/3/0/7/130739373/jarudopekuwolonuzed.pdfIn PDF document text
    • http://h8terade.com/uploads/1/3/0/6/130604724/7250543.pdfIn PDF document text
    • http://www.cturology.com/uploads/1/3/0/3/130323412/legeme-pafiginu-pinugolabifavar.pdfIn PDF document text
    • http://nshoilpurifier.com/uploads/1/3/0/7/130776587/zufogibewawivifuri.pdfIn PDF document text
    • http://hostmaster.myholidayplace.co/uploads/1/3/0/6/130639922/luzamifugasefe_newimafabof_bakuwadifax_xubuziga.pdfIn PDF document text
    • http://roelboekel.com/uploads/1/3/0/7/130738852/557650.pdfIn PDF document text
    • http://scubasassphotography.com/uploads/1/3/0/6/130604010/tumozujopizegesu.pdfIn PDF document text
    • http://remedleaf.com/uploads/1/3/0/5/130545260/5e3350.pdfIn PDF document text
    • http://www.godbody4eva.com/uploads/1/3/0/8/130873984/39eb89971c.pdfIn PDF document text
    • http://mx.musicadventure.net/uploads/1/3/0/2/130272330/1515064.pdfIn PDF document text
    • http://www.tamdistrictfinearts.org/uploads/1/3/0/4/130435785/nulat-rurepamido.pdfIn PDF document text
    • http://iamchelseaspeaks.com/uploads/1/3/0/6/130621294/312f4ac.pdfIn PDF document text
    • http://triumphantlawnandlandscapeservices.com/uploads/1/3/0/6/130621353/4795701.pdfIn PDF document text
    • http://globalabilities.org/uploads/1/3/0/6/130639883/xaxixotilej.pdfIn PDF document text
    • http://medicaleducationupdate.net/uploads/1/3/0/5/130543369/suwotut-vufibegujegi.pdfIn PDF document text
    • http://consors.org.uk/uploads/1/3/0/4/130483632/nomifabuwasa.pdfIn PDF document text
    • http://lg0lr.slpny.com/uploads/1/3/0/2/130272389/130272389.html#esllibrary.com+grammar+practice+worksheets+past+perfect+tenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000038b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38B9 16364 bytes
SHA-256: c374740700516b41f218ce1f3063ed30c57c5df665187242c67f0d0be227b05e
font_01_sfnt_off00005129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5129 7768 bytes
SHA-256: 90548696f2f9765d5e0c953ec03765ea04e5e8ea413650a42dbd80c5c297697e

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