Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1187f81033785d…

MALICIOUS

PDF

68.2 KB Created: 2021-02-20 10:16:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 03d41e091f36f7b920e9046b20894af7 SHA-1: bd4a98a3361552d0646e5fd844e2e46bc33aa7d6 SHA-256: 0d1187f81033785dd14650a9fa8e596bd216f3d3600ea575655b34da1d236790
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://baarspo.ru/wix?keyword=devilish+hairdresser+mobile PDF link annotation
    • http://checkmycredit.info/lonigamazggr.pdfIn PDF document text
    • https://cdn.sqhk.co/xenumobavun/hiifgGY/92991817708.pdfIn PDF document text
    • https://zekenegelu.weebly.com/uploads/1/3/4/3/134390475/a1506da06d3a.pdfIn PDF document text
    • http://xtina.online/apocalypto_hollywood_movie_tamil_dubbedur62j.pdfIn PDF document text
    • http://boevoenlp.com/wonderwall_projector_troubleshootingua08n.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/RihzZia/52488083166.pdfIn PDF document text
    • http://wide-mean.top/arkansas_razorbacks_2018_football_uniforms2da47.pdfIn PDF document text
    • https://katodelof.weebly.com/uploads/1/3/6/0/136051175/3095940.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/haxhf40/running_app_map_my_run.pdfIn PDF document text
    • http://trikolor.site/wuwexonopivoifqu0.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/hcOCcn6/does_college_baseball_play_9_innings.pdfIn PDF document text
    • https://tojaluteder.weebly.com/uploads/1/3/4/3/134384479/tupawozazonaka_nitevu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xixujoteb.epizy.com/wumukapitad.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB96F 5264 bytes
SHA-256: 5b44c3e3acc49f73f6a3a07a310784a4ef5e9c4279ba62065b178c5fff2a9be8
font_01_sfnt_off0000cb2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2D 10436 bytes
SHA-256: 0d3ac779abdd0f9e9863382d16304562c6b35721f60e575ee30e97f8ae42f35f
font_02_sfnt_off0000ef17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF17 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e