Malicious PDF — malware analysis report

Static analysis result for SHA-256 d894b2314f317eeb…

MALICIOUS

PDF

77.4 KB Created: 2021-03-20 00:29:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 83a6efde1de8f8e2a3de3ad1ca07f975 SHA-1: f6dd4229d22a3ce54be91f481e48dcc950ddfec7 SHA-256: d894b2314f317eebecfec417a23bdac2f024d165d2f050c39c65e90aa415bf5c
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by heuristics as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of external URIs and the link farm structure suggest an attempt to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/wix?keyword=tamilyogi+2020+english+movies+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482018/normal_5fd7d60bad979.pdfIn PDF document text
    • http://vumajepipixoju.iblogger.org/active_listening_in_communication.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/ihlibhd/sisters_of_mercy_this_corrosion_lyrics_meaning.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389801/normal_5fe0525eb3a09.pdfIn PDF document text
    • https://cdn.sqhk.co/kozutani/pXG59Rl/64321610233.pdfIn PDF document text
    • http://gomijojupi.iblogger.org/laboratory_investigation_report_template.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/cC6PftS/putudokufumunoxovopus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366406/normal_5ffc0b765cb20.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/gcjgUjb/horizon_talk_phone_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369665/normal_5fdf391c3f8b6.pdfIn PDF document text
    • https://cdn.sqhk.co/muzorefu/hLUijJm/phone_authentication_firebase_android_example.pdfIn PDF document text
    • http://femovanisom.iblogger.org/quotes_from_endgame_samuel_beckett.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387061/normal_604e1a881a0f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_60118b7dc6334.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://relamelekubapan.epizy.com/badger_meter_m5000_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca7269d7-03c2-477f-9aef-9a9c289e14ab/gexaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5f240b5-da99-4eb8-8cc6-66c60d98a926/nikon_d5100_latest_price_in_philippines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/529b7d87-87a1-4eef-90d3-a84141cbfbd8/cen_tech_battery_charger_not_working.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_off0000f093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF093 5620 bytes
SHA-256: ed3d17ec6cc4b95f0cc67a7d2e9caf646eef465ba036ede7119ba6cff4b942e2
font_01_sfnt_off000103ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AB 10676 bytes
SHA-256: 13aa4d940d77bf57da5c649624163a1d2cf8c8423fdacae25110f9fbd897efab

Open this report in the interactive analyzer, or submit your own file for analysis.