Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eac9d3feb1943ff…

MALICIOUS

PDF

77.3 KB Created: 2021-03-23 15:29:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d38ef0e08580d044f65dd99928fa2d04 SHA-1: aa0ddd34e78d63ff8143abd35e5fba953e7bc7bf SHA-256: 0eac9d3feb1943ff8123b3c316cb834a9ef5d0af3d942a79902678b7cc77dd95
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to trick users into downloading software. The presence of 'advanced rest client apk' in a URL suggests a lure for potentially unwanted or malicious applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/123?utm_term=advanced+rest+client+apk
    • http://fsbsiod.com/47739467953oms3w.pdf
    • https://cdn.sqhk.co/rixutixim/4dhhByA/9308966370.pdf
    • http://bitcoinlearningcentre.online/performance_of_agriculture_sector_in_ugandafhxu2.pdf
    • http://copyright-help-center.com/guia_consejo_tecnico_cuarta_sesion_2nagld.pdf
    • http://sell-toclick.online/tip_calculator_app_android_free2ybar.pdf
    • http://gvidilon.ru/courtly_airs_and_dances_all_movementskkzqo.pdf
    • https://cdn.sqhk.co/purovufizu/idvihBX/dotafulibem.pdf
    • https://static.s123-cdn-static.com/uploads/4479921/normal_600287ef9e702.pdf
    • http://popuboloza.22web.org/archer_unlimited_energy_apk.pdf
    • http://fejoromawefobo.22web.org/44343151742.pdf
    • https://cdn-cms.f-static.net/uploads/4424630/normal_604f82f9f1ea0.pdf
    • http://todayshop.website/how_quickly_does_hip_osteoarthritis_progressk1eiz.pdf
    • https://cdn-cms.f-static.net/uploads/4477863/normal_60252cf32a42c.pdf
    • http://sale50.pro/sajajutoretutowoboravamartxso.pdf
    • https://cdn.sqhk.co/biziduwime/gOgigdj/tekixejuwuvu.pdf
    • https://cdn.sqhk.co/busanurutar/W5Gif4C/winklevoss_twins_social_network_actors.pdf
    • http://noverst.xyz/93029461501nvqmp.pdf
    • http://flylovel.com/casio_fx-_9860gii_sd_user_manualn8dnv.pdf
    • http://help-feedback-amzn6.xyz/how_to_use_a_bissell_powersteamer_powerbrushmu0pc.pdf
    • https://static.s123-cdn-static.com/uploads/4404285/normal_60013bad19713.pdf
    • http://magnifioco.site/33164367627bomv7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ramejepazino.rf.gd/loudest_alarm_clock_app_for_android.pdf
    • http://webubekesivamuf.epizy.com/jazarobabofaxitak.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecae.bin
a870114b9bd62b4763a5a4dbbc6fbf07356a19c0f7b16f29c5e1054948a06652		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECAE 5180 bytes
font_01_sfnt_off0000fe61.bin
cc19a385b912e1376b156753b2488989420ba6df8d28acc7bf8af731e9da28c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE61 12188 bytes

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