Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f3c6e9362d9f0d…

MALICIOUS

PDF

49.3 KB Created: 2020-03-27 10:47:22 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 5734c3a95e7418e49b92831a4913d4c2 SHA-1: d49a22997f18487f23fe44838aec4d86972efe14 SHA-256: e9f3c6e9362d9f0dc3dce41c6f9eeb3e0044ecb621628075ce44c1b652308b97
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The document body, though partially corrupted, contains a URL that is also listed among the extracted URLs. No scripts were extracted from this sample. The primary attack pattern appears to be the distribution of numerous links, likely to manipulate search engine rankings or to lead users to 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://benkregel.com/uploads/1/3/0/4/130483980/130483980.html#tipos+de+sustantivos+y+adjetivos+en+ingles+pdf PDF link annotation
    • http://treeoflifepsychotherapy.com/uploads/1/3/0/6/130621483/dezosogale.pdfIn PDF document text
    • http://qualityirrigationllc.com/uploads/1/3/0/8/130814060/1718833.pdfIn PDF document text
    • http://bournemouthdrains.com/uploads/1/3/0/2/130291589/1640536.pdfIn PDF document text
    • http://vaguely-specific.com/uploads/1/3/0/5/130538945/lazifatepulezezira.pdfIn PDF document text
    • http://taidetails.com/uploads/1/3/0/5/130589261/977763.pdfIn PDF document text
    • http://consciousspirithealing.com/uploads/1/3/0/3/130323210/dugovawusuretopalaxe.pdfIn PDF document text
    • http://candykoalaplushieemporium.com/uploads/1/3/0/2/130289736/xevegofafox_pagawija_ruxadeterixake.pdfIn PDF document text
    • http://premiereathleticrecruiting.net/uploads/1/3/0/5/130551072/kowunigigedoka.pdfIn PDF document text
    • http://www.helenfentonart.ca/uploads/1/3/0/5/130551856/8f04c886c2.pdfIn PDF document text
    • http://gorilla4x4.com/uploads/1/3/0/6/130639161/562345.pdfIn PDF document text
    • http://mx.intensifyyoursport.com/uploads/1/3/0/2/130291779/gekofijov.pdfIn PDF document text
    • http://mountaintimecolorado.com/uploads/1/3/0/7/130775527/vavotexirugav.pdfIn PDF document text
    • http://dcigroup.ca/uploads/1/3/0/4/130490444/99719.pdfIn PDF document text
    • http://theright.buzz/uploads/1/3/0/7/130775135/jisupenepogak-rimilezexidu-zebupo-lotiparirole.pdfIn PDF document text
    • http://oryganj.com/uploads/1/3/0/7/130776481/734b0df3a950994.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

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_off00007ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF6 9036 bytes
SHA-256: af085150d46487f6e6014e5139f3d56e180c003c960a3b04c87e3981ea3ef685
font_01_sfnt_off0000a0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0DD 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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