Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecab0cdd59f18ef4…

MALICIOUS

PDF

74.6 KB Created: 2021-03-26 08:46:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 65b6198152af130ef194ada37c3a9313 SHA-1: cafbc1431bf6fb95bb5f8e37c43a2ea474ea26f9 SHA-256: ecab0cdd59f18ef45778e0f34f43f39a2e2aaba62e9d141d703eddd86c0f55b1
126 Risk Score

Malware Insights

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

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. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a spearphishing attachment designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/wix?keyword=massachusetts+driver%2527s+manual+2018+spanish PDF link annotation
    • https://cdn.sqhk.co/vunebegawiwa/ifjH3Kr/ninda_by_sheebah_lyrics_download_mp3.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/VzhbfSk/girly_wallpapers_girl_wallpapers_backgrounds.pdfIn PDF document text
    • http://betmoy56.com/kofexemitosw2tk.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/voRgfge/panini_adrenalyn_2014_fifa_world_cup_brazil_checklist.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikebepo/PhjWjfn/wutunagufuvululesiger.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/d4jhWgd/tonelunelurubowenumuki.pdfIn PDF document text
    • http://instapriz365.site/recaro_young_sport_expiry_datelybkn.pdfIn PDF document text
    • http://organicsss.space/doxulofunukiwegizelalisinw5h3.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/goHEUja/cup_stacking_challenge_worksheet.pdfIn PDF document text
    • http://idealslimitalia-official.site/facerig_custom_avatarsa1qco.pdfIn PDF document text
    • https://cdn.sqhk.co/dabebasavus/gixibgh/stickman_downhill_mod_apk_android_1.pdfIn PDF document text
    • http://thedefenseforge.com/too_busy_not_to_pray_free0t8t4.pdfIn PDF document text
    • http://maxist.ru/stacking_cup_and_saucer_setpeze0.pdfIn PDF document text
    • https://cdn.sqhk.co/sezabaxo/egfihO9/ikea_kitchen_cabinets_planner.pdfIn PDF document text
    • https://cdn.sqhk.co/vewukiziwemi/gd0KYnk/private_wifi_network_is_turned_off.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/ifichh6/19410280806.pdfIn PDF document text
    • https://cdn.sqhk.co/wakewafo/6sSjgpV/bisaze.pdfIn PDF document text
    • http://localdesign.me/are_airless_paint_sprayer_tips_interchangeablepebrr.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/djhggii/abiudi_misholi_audio.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/nerugiraxura/awards_and_achievements_in_resume_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/18287893563.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/ar_15_gun_case_with_lock.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/jagogi.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/tejejala.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_off0000e2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E2 5932 bytes
SHA-256: 9355089d78d113a287962846fd74dddfe1e89258543c4b5ff7feb1844b4112b2
font_01_sfnt_off0000f704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF704 11420 bytes
SHA-256: 7ee5ed39855e8fb0c63848262581ccd9087fe0b81cc8535d7bc1d5c727d62429

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