Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad3632334b59daf…

MALICIOUS

PDF

74.6 KB Created: 2021-04-03 13:24:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5344d639aaef7c5cb82c6cd7fe3762e4 SHA-1: 20ea99cc569d627ac799c31761055f33151d1426 SHA-256: fad3632334b59daf80985b18d5b739c75e1469e9fe511b03b43caa815104e487
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to speaker setup instructions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=how+to+connect+logitech+x+530+speakers
    • http://shop-you.xyz/fantastic_mr_fox_book_informationrrcsh.pdf
    • http://alerma.ru/zidamubawulomedmsp89.pdf
    • http://shishkin-seed.xyz/7_habitos_de_la_gente_altamente_efectiva_audiolibro_completozumr4.pdf
    • https://static.s123-cdn-static.com/uploads/4470028/normal_5feb7897ba0fa.pdf
    • http://copyright-helps-team.com/how_to_cite_apa_sources_in_textqtwfu.pdf
    • https://cdn.sqhk.co/jutusaxibu/jieogc6/assassin_s_creed_identity_for_android.pdf
    • http://tumbaa.space/davis_drug_guide_online_discount_codelal50.pdf
    • https://static.s123-cdn-static.com/uploads/4389353/normal_5fccb5e52066c.pdf
    • http://lbaranaydin.com/how_to_reset_03_honda_accord_maintenance_lightkyt1g.pdf
    • http://cabinetshub.xyz/73721248340xxs3h.pdf
    • https://cdn.sqhk.co/lilovenodi/hiijibo/cat_goes_fishing_download_2019_android.pdf
    • https://static.s123-cdn-static.com/uploads/4421983/normal_6007255ab9e31.pdf
    • https://cdn-cms.f-static.net/uploads/4446379/normal_60511598cda83.pdf
    • http://kittyplay.online/format_authorization_letter_collect_documents1kzzy.pdf
    • https://cdn-cms.f-static.net/uploads/4416671/normal_602ecf785f1cb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e9cad1c3-88b2-43ed-888e-46d0a16f9bc4/how_do_i_stop_my_first_alert_from_beeping.pdf
    • https://uploads.strikinglycdn.com/files/342567a3-fc33-4947-8e9e-3553370a8fa2/george_foreman_grill_recipes_chicken_tenders.pdf
    • https://uploads.strikinglycdn.com/files/975c18fa-ad23-4dbf-9dff-e0e68350fb6d/60124181884.pdf
    • https://uploads.strikinglycdn.com/files/719a7115-97d3-4416-b8bd-5f1eb5a83fb8/nakazarekabisojesomuguj.pdf
    • https://uploads.strikinglycdn.com/files/e743cb6c-70d0-41b3-880b-06331b067657/who_owns_traeger_pellet_grills.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_off0000e2bb.bin
5c6e2fcdebbaeb144421860fb6372051f0606f2d4ed2e7842ab4f7b3f8de2fec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BB 5812 bytes
font_01_sfnt_off0000f695.bin
181a46208f595654d073f5ae14f80821254188ae1f8cc36e107a933aacceb485		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF695 12184 bytes

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