Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fcfd531ebc36a52…

MALICIOUS

PDF

68.1 KB Created: 2021-02-27 05:43:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6a13c06b5a75571e4ada052e9eb9bff7 SHA-1: bbc4b65373c19fa1ae6175bebc18ce8ff3b75a51 SHA-256: 9fcfd531ebc36a52ca4122e43dc06a3343acf2279e211ec2fd2c404362023b53
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=deck+of+destiny+caraval In PDF document text
    • https://static.s123-cdn-static.com/uploads/4496585/normal_5febb34521696.pdfIn PDF document text
    • http://sale20.site/amsterdam_gregory_alan_isakovf1iuu.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/persuasive_speech_topics_for_8th_graders.pdfIn PDF document text
    • http://findattime.com/video_editor_apk_download_2020ospfw.pdfIn PDF document text
    • http://jofifuneku.medianewsonline.com/fowarawufusararidefopa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476142/normal_6010c9591d545.pdfIn PDF document text
    • https://cdn.sqhk.co/kenoramof/hezw4Ce/18628166117.pdfIn PDF document text
    • http://ukranews.site/35382844430v5hz7.pdfIn PDF document text
    • http://milanomoda-italy.website/elite_bilingualisma00yg.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzaxepigi/jnEijZ3/defender_110_hse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449998/normal_601841fd7b2b4.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/reinforced_concrete_design_textbook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459788/normal_5fd7cd7864f8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489035/normal_601a2e5167796.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikaderobiw.atwebpages.com/how_to_clean_air_force_1_inside.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c79b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC79B 5240 bytes
SHA-256: 20675ce0c90b4713b62895fc1dedf7ff3913cc48788441d926f08e1c4e997205
font_01_sfnt_off0000d994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD994 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000e221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE221 9672 bytes
SHA-256: 628fd42da0dce2ac4b3ee5293647a5867c49035ef5a26292ffe8b3644d768bc5