Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5e1248136b266cd…

MALICIOUS

PDF

79.3 KB Created: 2021-04-20 20:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fd847b0212095259bef5dfe677eee0ac SHA-1: fd45b2f461e8bf0f2922abedb524e078d1befb1c SHA-256: a5e1248136b266cdf9cc6db876cd44cc34918aeb85758a4e855ff22356a0e4b5
126 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 a high ML score indicating malicious intent. The document body, though garbled, suggests a lure related to a common technical issue ('Can't find netflix on panasonic viera'). The presence of external URIs and the overall structure strongly suggest this PDF is designed to redirect users to malicious sites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jacksth.ru/strik?utm_term=can%2527t+find+netflix+on+panasonic+viera PDF link annotation
    • http://depovujakav.iblogger.org/95080123799.pdfIn PDF document text
    • https://cdn.sqhk.co/kelanadu/6v0EgO6/88462991635.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420903/normal_5feaf9591adce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422876/normal_60665eb136601.pdfIn PDF document text
    • http://rezanufeku.mygamesonline.org/pimemewovojipatazoger.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/ronofeno.pdfIn PDF document text
    • http://bepelisufozasep.mywebcommunity.org/silabedonajabufabuxo.pdfIn PDF document text
    • http://update-win20.online/dinagohmnm3.pdfIn PDF document text
    • https://cdn.sqhk.co/gosuzufus/WUvgghb/voxopumixutubibugoxota.pdfIn PDF document text
    • http://jijoxep.getenjoyment.net/wikasomomezanapufodigivop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387933/normal_6038047476f90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474979/normal_5fd11c5acc598.pdfIn PDF document text
    • https://cdn.sqhk.co/gazegarov/dhaiiha/lg_health_app_battery_drain.pdfIn PDF document text
    • http://csxmoney.info/how_to_connect_jabra_engage_75_to_cisco_phonehwplu.pdfIn PDF document text
    • https://cdn.sqhk.co/godidudawat/61ajfyY/do_smart_meters_use_more_electricity.pdfIn PDF document text
    • http://fresh-ita.fun/gangster_wallpaper_girlfz6yr.pdfIn PDF document text
    • http://xexevigaje.22web.org/anime_tv_animania_latest_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/kPqjejg/borg_warner_t5_transmission_service_manual.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/efdbfb6a-a423-4d93-a1ff-f786e480b91b/49754960278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/449c1dac-cd17-4525-8b2b-c019aeee5685/dejafalatasexit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dc42f35-eae9-42fd-b669-0917e5040375/gobawere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70284001-6dc4-4884-ba49-2ba33b6cc61d/black_and_decker_le750_parts_list.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/hdfc_bank_loan_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0abf129-6276-48db-b1f1-bb06018b9476/94186597418.pdfIn PDF document text
    • http://nidudovuj.epizy.com/33672616535.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_off0000f818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF818 5216 bytes
SHA-256: 7fb4016e30df99e358f2c4dc6c0da64dc03f2a4172b817972e662b59f96cfb57
font_01_sfnt_off000109f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109F8 10888 bytes
SHA-256: 23a31b54b3d838dd845c5756d3420cd322b97a15d5d8e8f17a805306e75b0698

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