Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d72ebbbe1614665…

MALICIOUS

PDF

123.3 KB Created: 2021-05-07 11:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5dfdcd362acf3380e1a3548db3fa9d9e SHA-1: 226cf97f806174bbefe5c79bfa0ed1f4ce8008b0 SHA-256: 2d72ebbbe161466599007bac5fa3dcb2c5ea3e474de11de0747291e71642d7bb
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of malicious intent, likely to distribute further malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://maypoin.ru/strik?utm_term=better+than+nothing+meaning+in+urdu PDF link annotation
    • https://cdn.sqhk.co/sipebililofo/fgdUDii/17805026395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459058/normal_5fdaf4287abe7.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/unifi_ap_ac_pro_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443602/normal_5fd6126b46d67.pdfIn PDF document text
    • http://mitisavad.getenjoyment.net/26740678542.pdfIn PDF document text
    • http://vkysnaya-eda.site/soundarya_lahari_bhashyam_in_tamilsroyd.pdfIn PDF document text
    • http://todayshop.website/how_to_cancel_my_wall_street_journal_subscriptionm482r.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/m7g1Whf/age_of_sail_navy_and_pirates_gameplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_60331990f07f3.pdfIn PDF document text
    • https://cdn.sqhk.co/wokumima/idijjdc/90915417146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380858/normal_601a84703257e.pdfIn PDF document text
    • http://shoop-fg.ru/gozodusapiss9hxk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://b724dda4-e2e0-47c5-811c-ae3b7273578b.filesusr.com/ugd/a1e5ee_7da22d1910c74cb68cb0b935da0377f5.pdf?index=trueIn PDF document text
    • http://xejobutek.onlinewebshop.net/famibava.pdfIn PDF document text
    • http://jowokepo.atwebpages.com/bipaxiroponejozunu.pdfIn PDF document text
    • http://naxaroxabim.rf.gd/the_lightning_thief_chapter_11_read_aloud.pdfIn PDF document text
    • http://rupilozomu.epizy.com/nespresso_inissia_manual_uk.pdfIn PDF document text
    • http://biburusig.myartsonline.com/atomic_and_molecular_spectra_by_rajkumar_book_free_download.pdfIn PDF document text
    • https://b09d99c6-da67-4e55-b5b3-baceba093817.filesusr.com/ugd/a69c6c_954aec51c39d41e2b23ae6e2bbface3a.pdf?index=trueIn PDF document text
    • https://5ee0d2ad-6486-47ce-ab7d-0e7b2bae4193.filesusr.com/ugd/bc0d1e_7a3da43501f84e969f970bf0b95ebe6b.pdf?index=trueIn PDF document text
    • http://fupadawevedifi.rf.gd/bottled_water_industry_in_ethiopia.pdfIn PDF document text
    • http://garufazubet.epizy.com/wejebekoxukumor.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001961f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1961F 27076 bytes
SHA-256: bf040cf0b957fa209696875ce32779f07c91803480535e3eb3e17e853a157a5b
font_00_sfnt_off000150f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150F9 5080 bytes
SHA-256: d0b399944a435e70c0336013e09e82217db02b63deb0d3c424b221accefbf6bc
font_01_sfnt_off0001620f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1620F 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off00016d72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D72 12896 bytes
SHA-256: fe2f59cc5b0743483bd7a6ef84cab89a9c149a66042b6df6ca821dea7b3afe48
font_04_sfnt_off0001c59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C59A 7336 bytes
SHA-256: 454b2252fd824530cdb9c58d9d350b51244cbd6d36f2afefe54753f5931df204

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