Malicious PDF — malware analysis report

Static analysis result for SHA-256 3609e2ef46c9f54c…

MALICIOUS

PDF

71.5 KB Created: 2021-03-04 00:05:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c90b68924d3aebeca5805bd113947364 SHA-1: cc2c31f394163492f1ba30500354b5dfb30aaa50 SHA-256: 3609e2ef46c9f54c27c6cd8a4364123b6a8fa1c25f188ba92845af87a7fabd12
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=fisher+price+baby+papasan+cradle+swing+instructions PDF link annotation
    • https://lexigeme.weebly.com/uploads/1/3/4/5/134524735/vanasukazij.pdfIn PDF document text
    • https://cdn.sqhk.co/tilafukefuwe/ghgYCcf/fezajubina.pdfIn PDF document text
    • https://cdn.sqhk.co/juwafajem/BGjeEhc/woxokatomasofizovis.pdfIn PDF document text
    • https://cdn.sqhk.co/pobefozo/Fib3hdy/road_trip_planner_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/hc0jgif/fenovalapidobup.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/is_hvac_a_good_career_for_mechanical_engineers.pdfIn PDF document text
    • https://watorixaziju.weebly.com/uploads/1/3/4/5/134586039/1b14f34ab728.pdfIn PDF document text
    • http://rujewazaxijaza.sportsontheweb.net/turatajepexifejo.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/how_to_change_honeywell_pre_filter.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/fyNn3ja/61284762718.pdfIn PDF document text
    • http://xopapen.iblogger.org/chemistry_calorimetry_problems_worksheet.pdfIn PDF document text
    • https://wakokozetu.weebly.com/uploads/1/3/4/3/134307835/27d21c.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/bBagfEV/22333870710.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lawakux/bulbapedia_galar_forms.pdfIn PDF document text
    • http://besuwodusibix.rf.gd/what_to_eat_to_have_a_healthy_brain.pdfIn PDF document text
    • http://kiduvunizujenav.rf.gd/67657614033.pdfIn PDF document text
    • http://visiresape.epizy.com/92157800831.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD941 5624 bytes
SHA-256: 22ace69c57bb02f87cf05296606cc13987e3e05c4ab3d80949466d83fe95d2b6
font_01_sfnt_off0000ec6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6E 10412 bytes
SHA-256: c67e90a96f6517e760e8739239c719e0c46d7cb137bddfc158b9c7e67b243cdc