Malicious PDF — malware analysis report

Static analysis result for SHA-256 70944e9377acdc0a…

MALICIOUS

PDF

80.1 KB Created: 2021-03-03 01:59:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ff76703e747db97d6a889b675ec80b2e SHA-1: 5941a7b264d76c474045594af08b70cb7764ecfe SHA-256: 70944e9377acdc0a1b91c1d16eb5172ecc7607cce91c5bf549824dd141fb464e
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are dynamically generated and point to potentially malicious domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/wb?keyword=how%20much%20weight%20will%20you%20lose%20with%20super%20colon%20cleanse PDF link annotation
    • https://cdn.sqhk.co/remimidotomi/iMiagfS/project_makeover_game_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/gv93jga/coin_pusher_machine_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/vopokemib/y2Ueha1/my_horse_prince.pdfIn PDF document text
    • https://cdn.sqhk.co/vadavenaw/gg3kigt/breadwinners_dallas_tx_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/wafasojudo/hahi5iI/rollercoaster_rush_java_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/jelgjf6/ted_lasso_theme_song_title.pdfIn PDF document text
    • http://confirmationhelpcenter.com/lonodumwi1j9.pdfIn PDF document text
    • https://xiwupezarevapo.weebly.com/uploads/1/3/2/6/132681984/renetapudoridu.pdfIn PDF document text
    • https://gizafagubezuz.weebly.com/uploads/1/3/5/3/135321184/seteje_ketulopasit.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/ejgbLuP/survival_kit_list_uk.pdfIn PDF document text
    • https://jikowizovogowo.weebly.com/uploads/1/3/2/6/132682153/5d550509af22.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/ibRibhd/butenokudenik.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/ketabamiluv.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/YGjb1ha/47095407136.pdfIn PDF document text
    • https://cdn.sqhk.co/pobefozo/h1CGV2D/spiralizer_zucchini_recipe_side_dish.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lomogas/ielts_academic_reading_papers_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/didelaxuxibufi.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6E 6744 bytes
SHA-256: 8187145963fbf8e0b7977f93bb9cbfc296fb812f6e2b6f40a3c8d31ca5a797a4
font_01_sfnt_off0000fc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC55 5500 bytes
SHA-256: 116e7c821778b5e3608cc284182bc4d692bdc8ecad6d64e78eecab2b204cb3ba
font_02_sfnt_off00010efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFD 10316 bytes
SHA-256: 22e0ba89412f7885e55aa5ff02ef9c38708e46a516b92556da8db15a1536a7ee

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