Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50b600aa35882ce…

MALICIOUS

PDF

68.5 KB Created: 2021-02-22 17:03:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a591924c3a950829a1d3db7792e3adfe SHA-1: 0a6e3ecdd28bddc5b170fa896da1685acc8d73ae SHA-256: a50b600aa35882ce048a6959b8de93f65f4bc2212ed633dc0ff5e90de3f5240d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure related to product searches, likely intended to direct users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=xbox+360+wireless+internet+adaptor PDF link annotation
    • https://romuxejis.weebly.com/uploads/1/3/4/8/134887308/wasatoz.pdfIn PDF document text
    • http://klosheff.xyz/dobexh4xq5.pdfIn PDF document text
    • http://xitnet.fun/40775067808ncb7r.pdfIn PDF document text
    • https://figagukedeliv.weebly.com/uploads/1/3/4/0/134040575/40daa12f4.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/9cV3jpw/find_my_friends_app_icon_not_showing.pdfIn PDF document text
    • https://cdn.sqhk.co/tusifefovozu/dhRgjHd/samsung_galaxy_s10_plus_wallpaper_4k_download.pdfIn PDF document text
    • https://lilususuki.weebly.com/uploads/1/3/4/3/134317990/repojaxesijoxad.pdfIn PDF document text
    • https://nupigefaxobabu.weebly.com/uploads/1/3/1/0/131070289/tujegawaregiga.pdfIn PDF document text
    • http://mifvideo.space/gta_5_cheats_cell_phone_numbers4rm57.pdfIn PDF document text
    • https://nutuvujupakumap.weebly.com/uploads/1/3/2/7/132740288/sinegovakere-valajarax-vasamesodog-mixokometuk.pdfIn PDF document text
    • http://hookup756.fun/aulularia_di_plautoih3gk.pdfIn PDF document text
    • https://mogimefiledewe.weebly.com/uploads/1/3/1/8/131857364/b7f187a22e888e.pdfIn PDF document text
    • https://roguzemu.weebly.com/uploads/1/3/6/0/136018034/tutoba-jenefixazamano-lapidokulavuja.pdfIn PDF document text
    • http://alfa-quest.ru/bootstrap_templates_responsive_w3schools8kw0s.pdfIn PDF document text
    • http://card2card-perevod24.site/how_to_pair_dell_bluetooth_keyboard_and_mousep8rpk.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/dgjjgeh/nulovidebi.pdfIn PDF document text
    • http://tk-time.site/makojarilerunesc2l2u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fijonomun.rf.gd/85476012407.pdfIn PDF document text
    • http://pimurif.rf.gd/nanoxegadu.pdfIn PDF document text
    • http://rikirusekufipu.epizy.com/gujaxubogiliduw.pdfIn PDF document text
    • http://xujalupa.epizy.com/capital_iq_office_plugin.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_off0000d0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DA 5692 bytes
SHA-256: 7b42b7d02119f738753bcf8cbc55dbf146258d8d1e377e5ae599e72707775453
font_01_sfnt_off0000e451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 9504 bytes
SHA-256: ab2fcd3b35cfdce39752e4ede295b5cd7dd1786142241ef319041778632398ea

Open this report in the interactive analyzer, or submit your own file for analysis.