Malicious PDF — malware analysis report

Static analysis result for SHA-256 95080cd407750050…

MALICIOUS

PDF

83.5 KB Created: 2021-03-21 10:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c6bcc93a48caa6ae385ad1fb27c0d44a SHA-1: ec33ccbd57c780a01ea961f1dccbdd11cfb29dc3 SHA-256: 95080cd40775005031bdbbfee782c089442bab3c4b5577082562dd56f9a7665c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body is heavily obfuscated, but the presence of external links suggests an attempt to redirect the user to a malicious site. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/123?utm_term=plaque+type+oral+lichen+planus+case+report PDF link annotation
    • http://vavexefane.mypressonline.com/class_9_science_chapter_3_atoms_and_molecules_notes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464720/normal_5fc95d5a85a02.pdfIn PDF document text
    • https://cdn.sqhk.co/xeviremal/jWNO1XB/66835001238.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366633/normal_5fcf47f692d3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503309/normal_5fcd98974aaca.pdfIn PDF document text
    • https://cdn.sqhk.co/pesamelez/sJqvyia/consolidated_theaters_pearlridge_prices.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384482/normal_6003458ad1b1d.pdfIn PDF document text
    • https://cdn.sqhk.co/wogirujut/fxfcia3/heroes_mobile_world_war_z_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zibomevuguli/Gygjl1S/swing_shift_cinderella_imdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378405/normal_6050670209a8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402507/normal_600ba9cf2c990.pdfIn PDF document text
    • https://cdn.sqhk.co/zodenizekija/3nNO5D7/44261924394.pdfIn PDF document text
    • http://xupokaxe.medianewsonline.com/garmin_nuvi_2595_specifications.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413347/normal_6041974a7d00a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457302/normal_5fd62bf8e7332.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/data_center_manager_jobs_in_canada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_600cf8db499a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482206/normal_5fdc8afa12a2e.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/how_to_get_certified_forklift_operator.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/4668a6f9-affa-4849-b0a6-3c8e22177c32/jisagalomu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46a55786-f996-43fa-81db-08d4cf8522ae/lumokul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a0ae931-e224-4c6b-8e0a-47813e7d24bc/kuxokol.pdfIn PDF document text
    • http://patudesaruvob.atwebpages.com/consonants_and_vowels_sounds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb6bd9e3-552c-4386-ac6a-15cbb7b2292a/44370577807.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_off000109a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A5 5248 bytes
SHA-256: 603f968e16d40f2699607a7251e51594a39dd8f3cccff8eb5a0082ff6700c048
font_01_sfnt_off00011b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B86 10824 bytes
SHA-256: de7acd45f03d7bfc9f65a4b1615057de8766bccca9502856463d817408956d50

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