Malicious PDF — malware analysis report

Static analysis result for SHA-256 7006f2fc77348f28…

MALICIOUS

PDF

41.5 KB Created: 2020-03-29 14:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c0facb697496e20f162b2e81d359cc81 SHA-1: 4c18ae2c75263b0cb369c0a67769628ecf1e3ee7 SHA-256: 7006f2fc77348f28aa5ae397648992bd4e3d2ff26f4fb1b3b13fc22a7c905bdb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, identified as a link farm. The document body, though heavily corrupted, contains text suggesting a lure for downloading movie content, which is a common tactic for distributing malware. The ML classifier strongly indicated maliciousness, and the PDF structure itself is suspicious due to the mass of external links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://mta-sts.mx.grandsalinelibrary.com/uploads/1/3/0/3/130379757/130379757.html#the+hobbit+an+unexpected+journey+full+movie+download+in+hindi+filmyzilla
    • http://motion-sickness.com.au/uploads/1/3/0/2/130270864/volawa-sosaw-mobedi.pdf
    • http://fitnessbysteve.com/uploads/1/3/0/6/130604486/dunesetefidaratexipo.pdf
    • http://morenocristina.com/uploads/1/3/0/6/130640025/tixaxunenorubisimoda.pdf
    • http://detox-goddess.com/uploads/1/3/0/5/130550903/488981.pdf
    • http://massagebyrochelle.com/uploads/1/3/1/3/131383469/dosifep-bevomerufu-resodu-rotozufu.pdf
    • http://heavygratitude.com/uploads/1/3/0/5/130590410/jilegufas_zuxeromabux_pixolij.pdf
    • http://disruptionpartners.com/uploads/1/3/0/3/130379769/rewuzifinod.pdf
    • http://misstootsiefootsie.com/uploads/1/3/0/6/130604730/jaxepot.pdf
    • http://shockwavetherapycardiff.net/uploads/1/3/0/6/130639953/956768.pdf
    • http://unimportantlyurgent.com/uploads/1/3/0/5/130588798/7016411.pdf
    • http://moderncabinetsinc.net/uploads/1/3/0/6/130621213/gofilanikiturig.pdf
    • http://marylandwearandcarrypermit.com/uploads/1/3/1/1/131163953/batosiwuma.pdf
    • http://artgroupie.org/uploads/1/3/0/3/130313366/972a447df09.pdf
    • http://jjsdeepcreektubes.com/uploads/1/3/0/6/130620635/4574123.pdf
    • http://midses3.com/uploads/1/3/0/4/130476976/nekotedu.pdf
    • http://northcanterbury.properties/uploads/1/3/0/6/130604988/3079293.pdf
    • http://hostmaster.phillongfootphotography.co.uk/uploads/1/3/0/5/130589302/pazivuvelolodem_vodizun_jajabimefozam_dilavuwemojufi.pdf
    • http://www.somasoakcanada.com/uploads/1/3/0/5/130551641/dba4912fdee5f.pdf
    • http://abundantlifecoaching.us/uploads/1/3/0/4/130436094/3d2950a.pdf
    • http://shibaboss.com/uploads/1/3/0/8/130814669/kifojagisogudegosu.pdf
    • http://lacittamobile.org/uploads/1/3/0/5/130590499/5147011.pdf
    • http://wellskin.org/uploads/1/3/0/6/130639292/zezivoremerut.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007440.bin
b31c88cbb9a3c7ccb544145887c176046ba74b19f71c63998a0a2a55e41480ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7440 8588 bytes

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