Malicious PDF — malware analysis report

Static analysis result for SHA-256 3868570a7a34b71b…

MALICIOUS

PDF

83.2 KB Created: 2021-04-07 21:20:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c68baf5bbb3f521ff899135441355f7f SHA-1: 87ba51c86df0509a3224bb929fd89433c5bd4877 SHA-256: 3868570a7a34b71b3ad31e7f4d21a41151af196ac4a48fabbf3b52e03a4d2b0e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple external URIs, with one specifically linking to a URL that appears to be a lure for downloading Apple Music for free. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious or unwanted content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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/strik?utm_term=how+to+download+apple+music+for+free+in+pc PDF link annotation
    • https://cdn.sqhk.co/janezewufaj/qSkiaib/mow_zombies_mysterious_gun_unlock.pdfIn PDF document text
    • http://wisopenudaris.22web.org/vujuza.pdfIn PDF document text
    • http://paksorond.xyz/ge_profile_microwave_door_latch_replacementzjtnq.pdfIn PDF document text
    • https://cdn.sqhk.co/fazofasufiwu/sYdPgdb/35736476467.pdfIn PDF document text
    • http://twirlini.com/22521727137ztao7.pdfIn PDF document text
    • http://kodesurajevo.iblogger.org/carnegie_learning_integrated_math_1.pdfIn PDF document text
    • http://stassikorskyi.com/wall_street_journal_digital_subscription_cost5cs29.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/zohi6qY/twisted_sugar_belmont_nc.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/cphaghP/80s_retro_logo_maker.pdfIn PDF document text
    • https://cdn.sqhk.co/kigoxeni/cnijfib/snes9x_gx_wad.pdfIn PDF document text
    • http://7lessons.website/lawidixevuklywgz.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/Kzhidjh/18643827567.pdfIn PDF document text
    • https://cdn.sqhk.co/xanovika/gcXNijp/kogafixam.pdfIn PDF document text
    • http://hotsales-com.xyz/school_uniform_must_be_bannedhggoc.pdfIn PDF document text
    • http://cardioactiveufficiale.site/48843781005jjjku.pdfIn PDF document text
    • http://changely.club/business_information_systems_ucc_mastersixz5w.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/I9S3Sjf/racing_racer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/karadirimose/hwhg9ig/wugebukimadizagepugon.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/e34906c7-eb76-4a98-8992-365677b815c8/lawusoranujizododax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79a44208-1177-4fdc-9894-294d8cd6a5ca/nenisezeta.pdfIn PDF document text
    • http://noxoxuf.rf.gd/evenflo_infant_car_seat_cleaning_instructions.pdfIn PDF document text
    • http://kigajorujotek.rf.gd/nimex.pdfIn PDF document text
    • http://pixividazexew.epizy.com/corrosion_engineering_and_cathodic_protection_handbook.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A7 5356 bytes
SHA-256: 0bdc88dc6689e71b634d92b20532a863f1bdafb1ebc7373b05ee07ba2974bd16
font_01_sfnt_off000118da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DA 11268 bytes
SHA-256: 950150c5feca3a88446f5123ff7a413601301b0d3404573e8ef3daec0d32e5fc

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