Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0015674e1c70b65…

MALICIOUS

PDF

53.6 KB Created: 2020-03-13 03:18:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 06956df1a73bcb0b1dab953c0254207d SHA-1: f96a6543c78514216721c20216fe6f1dd1043e77 SHA-256: e0015674e1c70b65c67adffb100cf16a23dc8aca5e75822053078b63635f241b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of external links, many of which point to PDFs with numeric slugs, indicative of a link farm or SEO scam. The document body, though heavily obfuscated, contains a URL related to "diabetes mellitus tipo 2 en chile scielo", suggesting a lure to attract users to click on the embedded links. No scripts were extracted, and the primary malicious activity appears to be directing users to potentially malicious or spam content via a link farm.

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://msgarletts-hancock.com/uploads/1/3/0/9/130969678/130969678.html#diabetes+mellitus+tipo+2+en+chile+scielo
    • http://atozfinishes.com/uploads/1/3/0/8/130813084/dde4988e5967356.pdf
    • http://smokeytrout.com/uploads/1/3/0/6/130621005/kogemepiruj.pdf
    • http://www.lesbutineusesdemarcoux.com/uploads/1/3/0/4/130488734/6480610.pdf
    • http://vpn.quantum5280.com/uploads/1/3/0/7/130775628/2769261.pdf
    • http://brainiacmenu.com/uploads/1/3/0/7/130739963/9067c4cd4507d.pdf
    • http://mobull.net/uploads/1/3/0/4/130477026/jisitifapitemili.pdf
    • http://reviwork.com/uploads/1/3/0/8/130814216/2b36d4ac.pdf
    • http://hostmaster.friendspub.ca/uploads/1/3/0/4/130475994/7996249.pdf
    • http://yotainme.com/uploads/1/3/0/3/130379676/zafoluzum.pdf
    • http://info.studiogiapponese.it/uploads/1/3/0/6/130605238/ef8ba.pdf
    • http://totcentsblog.com/uploads/1/3/0/6/130604028/7466133.pdf
    • http://shantural.com/uploads/1/3/0/7/130739621/xilotunof-pefuwimopesoku.pdf
    • http://fybubble.com/uploads/1/3/0/5/130542907/tobem_belojafalow_zulum_vuranoto.pdf
    • http://mta-sts.pembrokeshirebuilder.co.uk/uploads/1/3/0/6/130603810/fuvetabod.pdf
    • http://nhsilbert.net/uploads/1/3/0/5/130588613/ac0ddc804.pdf
    • http://thenoblehood.com/uploads/1/3/0/5/130551310/torumuzutakatupel.pdf
    • http://lukefischer.com/uploads/1/3/0/4/130436181/dawipu.pdf
    • http://gertieandruth.com.au/uploads/1/3/0/6/130639476/6876f.pdf
    • http://www.drjohnshuster.net/uploads/1/3/0/7/130776266/02c5e28b3a12e7.pdf
    • http://deeprootsdumpsters.com/uploads/1/3/0/5/130551654/rolufa.pdf
    • http://clairepinci.com/uploads/1/3/0/6/130605331/7148206.pdf
    • http://hudeccattleco.com/uploads/1/3/0/6/130639042/f93137f2fe5.pdf
    • http://www.youngexplorersenrichment.com/uploads/1/3/0/8/130874012/kipagovadufove-guluvide-pigajoga-runit.pdf
    • http://fredericbadey.com/uploads/1/3/0/6/130604787/dubila.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091bc.bin
6a5b75b9e7c2c0400f47a5490d2f42c06ef06fc6f2270af043f266ab2b1d2b3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91BC 8720 bytes
font_01_sfnt_off0000b189.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB189 16036 bytes

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