Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a7fa62fae6a230…

MALICIOUS

PDF

79.5 KB Created: 2021-03-20 19:17:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d4b32ae6810c8468de8fb34bcc4bc833 SHA-1: 290016a1dc42a3be0ead6c68da2c59c43484fb7c SHA-256: 74a7fa62fae6a2303e1da955fbb4211812d128de07fde5413ea1aa7aac17f1e8
166 Risk Score

Malware Insights

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

The PDF contains multiple suspicious links, with one explicitly noted as an 'invisible link to suspicious domain'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://xajibur.ru/strik?utm_term=cual+es+el+titulo+nobiliario+mas+bajo PDF link annotation
    • https://s3.amazonaws.com/xiwevitox/52295547640.pdfIn PDF document text
    • http://olipaka.xyz/diskdigger_photo_recovery_download_apkh6kmj.pdfIn PDF document text
    • http://mediaverifiedbadge.com/91013207517qc01s.pdfIn PDF document text
    • http://mailedflkf.site/comparative_study_designzhwh7.pdfIn PDF document text
    • http://it50off.pro/sansa_clip_jam_manual3uah4.pdfIn PDF document text
    • http://testrun.ru/keurig_2.0_carafe_setting_not_workingtnwsj.pdfIn PDF document text
    • http://labiosdewonda.com/uber_driver_account_deactivatedvrm3m.pdfIn PDF document text
    • http://mexicotop.xyz/badalujen02ns6.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/icmr_guidelines_for_pregnant_woman.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458125/normal_6024c0b950884.pdfIn PDF document text
    • http://silkhfig.bid/what_is_moonlight_calledqcjac.pdfIn PDF document text
    • http://lenudes.com/elgato_game_capture_card_softwareh13od.pdfIn PDF document text
    • http://lnstagram-support.live/lexedejerosanajelikogoo5xf.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/94415363808.pdfIn PDF document text
    • http://azules.ru/metformin_500_mg_for_pcos8ks2x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497348/normal_5fc9f5e619d6a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2b1f3af-5ab6-49d0-b2f1-6a3c77fb9093/54234942241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6a4a349-3485-41ba-98f3-105a4c3e32f3/nolipujorunapawiruzorov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eae2dd0-4ac6-4e23-813f-73042f0f1373/68473231777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd6c5e5c-5f85-4480-a4a0-ee59f2be5b47/margin_of_safety_formula_in_units.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e363adac-d14b-4a56-88c5-ff2682252964/latebogavigagapa.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_off0000f873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF873 4952 bytes
SHA-256: 38470df09572e451dcb1091b7258c9d0e3daefd43d3dfe8438bcc295e1861894
font_01_sfnt_off0001092f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092F 12508 bytes
SHA-256: 4a6b103c4544c72a816a44593ecb19c32514a92429c55d09e9e4dbfcc3b3f54c