Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e45c3a7a9daad1…

MALICIOUS

PDF

79.2 KB Created: 2021-03-17 10:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: f9ced36344f9bbb923a41d9b32495abc SHA-1: f23861658ed31526aa8a98dd3dcc9a815888f2bf SHA-256: 02e45c3a7a9daad10b9cf3f7a7a76c9e194df6b4b37f9512795d7ecaff24b601
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a link farm on disposable hosting, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, appears to be related to the embedded URL's search query, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/award?keyword=biosynthesis+of+complex+carbohydrates+pdf PDF link annotation
    • http://suvasemujodi.22web.org/how_he_loves_piano_chords.pdfIn PDF document text
    • http://perfectiona.online/silence_book_review_natasha_prestonc02xb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489440/normal_5ffa7fe954160.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501975/normal_5ffd2dbc6912d.pdfIn PDF document text
    • http://awpmode.com/pokemon_emerald_guidebookebv50.pdfIn PDF document text
    • http://top-odejda.com/will_there_be_a_magisterium_book_6cjd0j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446492/normal_600302c17e6f2.pdfIn PDF document text
    • http://yachtcharter.group/karijojajibzwdpg.pdfIn PDF document text
    • http://copyrights-notices-helps.com/space_wolves_venerable_dreadnought_unboxingza0ub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490269/normal_605167b53f640.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468259/normal_6047e2dfecb13.pdfIn PDF document text
    • http://7lessons.fun/how_to_connect_my_bose_headphones_to_macj0miv.pdfIn PDF document text
    • http://reduslim-europa.site/wumumoj77p8.pdfIn PDF document text
    • http://hustlinmoney.com/nogafeti70b8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0b670cc3-d94b-4117-8b98-7ce677fb6c21.filesusr.com/ugd/7bc559_90beb1e52fab42c191396be554e916af.pdf?index=trueIn PDF document text
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_a2e978ce0dc94c79a2d5273aced8ece0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a6e1eff-0659-48c9-adfa-4201b3a26fef/mesa_boogie_mark_iv_combo_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9150f9ee-a7fe-4d5d-99d6-5ef380b76633/33868781838.pdfIn PDF document text
    • http://bovoruf.rf.gd/what_is_the_half_life_of_losartan_potassium.pdfIn PDF document text
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_19d94dabc51848afb06691bee1fe9e5a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bb6af12-c763-42ad-8902-e9358351f30c/reset_service_light_1999_honda_accord.pdfIn PDF document text
    • http://kojomazudogog.epizy.com/how_to_crochet_a_beret_youtube.pdfIn PDF document text
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_b9bb5827213d40b2b4ec5d1853853965.pdf?index=trueIn PDF document text
    • https://56a7be67-7dca-40da-a973-69ad719fb73b.filesusr.com/ugd/fedf23_dd4eb99cc316472eaa77d767a53c8283.pdf?index=trueIn PDF document text
    • http://puteruwegadijem.epizy.com/map_master_for_minecraft_pe_mod_apk.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_off0000f67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67A 5752 bytes
SHA-256: 99f57d81fd25f4d9f8b70c47624a12df9b78d155ca9363583618f006e891fa91
font_01_sfnt_off000109ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EF 10796 bytes
SHA-256: 4e5f7d4de4ee54f9de9683c3da5b6b9cddedc4554b9543997fb8d16365936776