Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e32fe39df096880…

MALICIOUS

PDF

81.4 KB Created: 2021-04-04 04:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bf87d233468cea295b19694f45af5c8 SHA-1: d4d0081bad534ee80e6cc62cb14afc8f72c887e0 SHA-256: 9e32fe39df09688062928b15d6d8e0d7396d5273c665479ca1daa3b1e08f2026
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'ponafet.ru', which is presented as a download for 'Bob omb battlefield trumpet sheet music'. Several other unknown reputation URLs were also extracted, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URI indicate a likely attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=bob+omb+battlefield+trumpet+sheet+music
    • http://afracheat2.xyz/zevufimederejujuxodaczuf.pdf
    • https://dujedagopodiku.weebly.com/uploads/1/3/4/5/134580966/1496888.pdf
    • https://nelizebowi.weebly.com/uploads/1/3/4/7/134734992/39d2b.pdf
    • http://meetcabinets.xyz/why_wont_my_propane_heater_stay_onj2uhf.pdf
    • https://tesegape.weebly.com/uploads/1/3/5/3/135387632/pavusebutumanok.pdf
    • http://zulurasovuguloz.66ghz.com/em_basic_chest_pain.pdf
    • http://scoretdho.best/dutiteqeqf9.pdf
    • https://lelewamopubexab.weebly.com/uploads/1/3/4/3/134324934/2008412.pdf
    • http://igcopyrightverify.com/mirro_pressure_canner_gasket_9882gokd0.pdf
    • http://mbfsopg.com/393536525934atik.pdf
    • http://bcipreactivaperu.com/pukenalefoziwixorn6b3j.pdf
    • http://newberginvestmentproperty.com/what_is_the_cost_of_living_increase_for_20204kmpz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/d947ed79-6e4b-4141-8ea5-49fad754b7c5/maximus_hero_vii_ram_compatibility.pdf
    • http://bevapewi.epizy.com/bsc_computer_science_syllabus_2020.pdf
    • http://beguresenoraw.epizy.com/kanmani_pol_en_amma_song_masstamilan.pdf
    • https://uploads.strikinglycdn.com/files/ba29ef8a-6475-4ad2-acc4-334c55a877d6/bepemu.pdf
    • http://mujunuge.rf.gd/passport_renewal_south_africa_forms.pdf
    • https://uploads.strikinglycdn.com/files/d2c071d8-2c99-4fc7-81e4-db7da3935218/kekiwe.pdf
    • https://uploads.strikinglycdn.com/files/2ac0d6d2-f7eb-41c5-ade8-d74470012fd4/gakefidumibowav.pdf
    • http://tofezaniv.rf.gd/gikibobu.pdf
    • https://uploads.strikinglycdn.com/files/a4f1a764-5139-4991-9f15-2c5c29c332e9/the_pact_2014.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0e7.bin
fdd90bd5d47a73921ee1af1efc38bf230c81792db1bebfb8bc1e420c07d0f7b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E7 5360 bytes
font_01_sfnt_off00010318.bin
4a223615f685ca99f61c64d1e52d5947820dee1ae018f243d4fc7a22afb5acd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10318 11540 bytes
font_02_sfnt_off00012aa4.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AA4 4324 bytes

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