Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d0137d6b89391e…

MALICIOUS

PDF

78.2 KB Created: 2021-03-22 13:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1a20f93831ad610a4a8dff0824f402b1 SHA-1: 230d722cb6cb74924a3cdfcab228a99b91a83648 SHA-256: 07d0137d6b89391e11b53e9d30ce4fcb251505c284486b03522c0eca368e780e
146 Risk Score

Malware Insights

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

The PDF contains a malformed stream and multiple external URIs, indicating it is likely a malicious document. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though truncated, references a Dewalt product, suggesting a lure to download further content from the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://soxebez.ru/strik?utm_term=dewalt+12+double+bevel+sliding+compound+miter+saw+dw718 PDF link annotation
    • http://kepalimis.22web.org/91266929084.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/ijh18Es/w3schools_html_image_tag.pdfIn PDF document text
    • https://cdn.sqhk.co/gilitejeku/Jiejbjy/72357578259.pdfIn PDF document text
    • https://cdn.sqhk.co/fedijadika/iaEhgie/home_lobby_design_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/posiraki/gfYigU3/retro_games_download_apk.pdfIn PDF document text
    • http://jsexj.fun/human_trafficking_definition_international_law65i58.pdfIn PDF document text
    • http://runmasten.online/2252728081971d9c.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/iifjjJB/crushed_ice_color_scheme.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/x7prgjO/big_win_baseball_hack_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kosenopelid/aija0jh/tovufavi.pdfIn PDF document text
    • https://cdn.sqhk.co/zativojor/ghhsMIj/note_taking_apps_for_windows_for_students.pdfIn PDF document text
    • http://samyog.ru/nilubalepimirenufulevizapir6i5.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/tyjegiu/62332143222.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/xhhMib8/8257057535.pdfIn PDF document text
    • http://1-bog.ru/it_stephen_king_book_pagesg06of.pdfIn PDF document text
    • https://cdn.sqhk.co/kewesowovim/bYkXhaZ/41515233738.pdfIn PDF document text
    • https://cdn.sqhk.co/nenakowi/Qgh1jzq/8936508787.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/9Xk0cih/imeche_mpds_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kirogebi.epizy.com/aluratek_smart_frame_app.pdfIn PDF document text
    • http://nifuxezelepet.epizy.com/vevipamalojovijisa.pdfIn PDF document text
    • http://xinudekewukipi.rf.gd/96566112775.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/55098229253.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/blockade_running_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/animal_farm_cliff_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/wasijegirixomidena.pdfIn PDF document text
    • http://vakorizu.epizy.com/61484648322.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/antivirus_2019_free.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_off0000ee33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE33 6144 bytes
SHA-256: 0b5b3c4856c4fd7e57f1f724e587777fc9aa52fdab43eb1bc5facaf094a38815
font_01_sfnt_off0001032a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032A 11680 bytes
SHA-256: 2706b5271d4f4f2904db189469469bf359bb592fae59751a3303dcca728a2348