Malicious PDF — malware analysis report

Static analysis result for SHA-256 004a62b4d75ba64a…

MALICIOUS

PDF

32.8 KB Created: 2020-03-14 16:01:26 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8ca72bce0b6835ea9af3e933faf082d2 SHA-1: 34e6a7ab7e680b2922c72630405a95112d171b97 SHA-256: 004a62b4d75ba64ab81a4a49a47564645ffc1bf7b64c22698a498e53bfa21a38
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, identified as a 'PDF link farm' heuristic. The embedded document body text, though garbled, contains a URL that is also present in the list of external links. The primary purpose appears to be directing users to a multitude of other PDF files hosted on various domains, likely for SEO spam or to distribute further malicious content.

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://w83.brdge.org/uploads/1/3/0/7/130776363/130776363.html#teal+platform+heels+amazon
    • http://srilankanprivatedriver.com/uploads/1/3/0/5/130590168/kejapog.pdf
    • http://nounoucergy95.com/uploads/1/3/0/8/130814241/ganexat-bilokatiboruf.pdf
    • http://candroid.net/uploads/1/3/0/3/130379145/zironexevuzifo.pdf
    • http://amstelkorendag.nl/uploads/1/3/0/6/130640183/tamivu-xuxib-zewadovok.pdf
    • http://caricaturesbysimon.com/uploads/1/3/0/6/130639840/gobegemegiju.pdf
    • http://abundancecooperative.com/uploads/1/3/0/6/130621642/b66aa492dd05d2f.pdf
    • http://qualityeducationglobal.net/uploads/1/3/0/3/130323445/9591184.pdf
    • http://binarytradeassistant.club/uploads/1/3/0/4/130488820/7790994.pdf
    • http://beauhive.com/uploads/1/3/0/5/130550744/892086077268.pdf
    • http://mail.mallonhomes.com/uploads/1/3/0/7/130776775/6070687.pdf
    • http://innerwestviolin.com.au/uploads/1/3/0/2/130291724/manajovevu.pdf
    • http://peterdoseck.net/uploads/1/3/0/5/130588906/8827710.pdf
    • http://www.lazydaysbb.biz/uploads/1/3/0/8/130814101/lisaxatasigiramug.pdf
    • http://babsandbadeboutiques.com/uploads/1/3/0/6/130621832/0693ee9b4bab.pdf
    • http://www.visushi.net/uploads/1/3/0/6/130640018/jufimapojagev.pdf
    • http://rommaneephuket.com/uploads/1/3/0/4/130483047/1830601.pdf
    • http://nightwriter.photography/uploads/1/3/0/3/130313253/3041239.pdf
    • http://airedefamille.com/uploads/1/3/0/6/130604636/a60a5.pdf
    • http://www.sakarifamous.com/uploads/1/3/0/6/130622101/gabanetaxuzaw_makemukuna.pdf
    • http://www.azconsulting.org/uploads/1/3/0/6/130604465/63084910.pdf
    • http://prosseduction.com/uploads/1/3/0/5/130539516/webigar.pdf
    • http://bennetteducationalconsulting.com/uploads/1/3/0/7/130738998/1689292.pdf
    • http://fashionobscura.com/uploads/1/3/0/5/130552034/firujabamuzike.pdf
    • http://drdosorriso.pt/uploads/1/3/0/8/130814133/fobumovuwararujo.pdf
    • http://horncomb.com/uploads/1/3/0/6/130621058/tenalulovunilas_zowijaro.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_off00005d87.bin
a703a761a9a1a90ac9ec1520df0f6e78f450eac7f06f8ee0ebfeb72520850616		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D87 5944 bytes

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