Malicious PDF — malware analysis report

Static analysis result for SHA-256 605ae5927e16ff09…

MALICIOUS

PDF

77.4 KB Created: 2021-04-04 14:19:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d4b9bb716da28b97daac49375b564ad6 SHA-1: 116669e39e7a4f38e3be69185784e51b07e1d102 SHA-256: 605ae5927e16ff09dc44bfb1dc17b3e8800833a79ce172b721cf65db232db606
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • 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://xajibur.ru/aws?utm_term=netgear+wnr1000+router+manual PDF link annotation
    • https://dosogomufafana.weebly.com/uploads/1/3/2/6/132696174/8914613.pdfIn PDF document text
    • https://sekoxakukajafal.weebly.com/uploads/1/3/4/7/134705290/1417357.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/fgggGcl/gwent_the_witcher_card_game_deck_guide.pdfIn PDF document text
    • http://nerixobetevo.iblogger.org/wumimivodo.pdfIn PDF document text
    • https://kuvobawodamelis.weebly.com/uploads/1/3/5/3/135350379/5985526.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/4ifz0hc/splash_ocean_sanctuary_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/butituguxur/eWhdlQe/yelp_find_food_delivery_services_nearby.pdfIn PDF document text
    • https://wabirigiraziw.weebly.com/uploads/1/3/6/0/136017191/lovenoroxowal.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/variables_on_both_sides_equations_worksheet.pdfIn PDF document text
    • https://gavuzamamezi.weebly.com/uploads/1/3/4/5/134590232/bemojefajizile.pdfIn PDF document text
    • http://rixadixiji.scienceontheweb.net/52973309538.pdfIn PDF document text
    • http://runivofo.iblogger.org/lamegalujiso.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/Xoijige/analfabeto_digital.pdfIn PDF document text
    • https://birewabozokufa.weebly.com/uploads/1/3/0/8/130814216/223debed3e0.pdfIn PDF document text
    • https://deponoma.weebly.com/uploads/1/3/2/6/132696267/jurokagefuxexib.pdfIn PDF document text
    • https://faxefijuw.weebly.com/uploads/1/3/1/8/131872096/xafene.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/JOhehd7/score_hero_hack_ios_ipa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xasitotimokines.rf.gd/kirefesezas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5316f25d-4819-4d82-ace2-cb8c8cf96887/lenovo_tablet_wont_turn_on_just_vibrates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eec2b39-84c3-4c7d-a1cf-579a81921a1e/luneromutawalono.pdfIn PDF document text
    • http://metologedafux.epizy.com/26964499067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28397d65-4223-4e29-a111-ed702642232d/fegemumipameseg.pdfIn PDF document text
    • http://wunikuwikefa.epizy.com/abc_song_music_sheet.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_off0000f1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F3 5084 bytes
SHA-256: 1ce48957e5aaf5a81c91c4f4ab4ed1ae997b525b38537d78ff7899b4135d609d
font_01_sfnt_off00010344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10344 10312 bytes
SHA-256: dbc1a47ebbd09cd356cacbc45c490c7399974c31457e26690dfe19185ceb8890

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