Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfe1b5854b987c0…

MALICIOUS

PDF

81.7 KB Created: 2021-03-19 20:52:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 18bddc5f2d3768dc528be04ee90d4be6 SHA-1: 9a3b53ab248720ebb8ff4781a8c1a9bae678f556 SHA-256: abfe1b5854b987c0945850ae3fa7cfdf1b78c829bbbc1eb3a75374b3646eeee9
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are typical of phishing lures designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/award?keyword=blown+film+extrusion+training+pdf PDF link annotation
    • https://cdn.sqhk.co/denobafopum/SicggtF/69871854402.pdfIn PDF document text
    • http://magazok.top/best_car_seat_stroller_combo_for_twinss3mao.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479715/normal_5fc612c52e516.pdfIn PDF document text
    • http://zezomaxijuduj.22web.org/bulking_meal_prep_plan.pdfIn PDF document text
    • https://cdn.sqhk.co/morureju/ijcLgcl/word_finder_scrabble_with_friends.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/0whjOv9/89705113239.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/0ia1yha/ria_money_transfer_mobile_money.pdfIn PDF document text
    • https://cdn.sqhk.co/jafakitiw/hpuAYig/drag_sports_bike_wallpapers_for_my_mobile.pdfIn PDF document text
    • http://carishr.com/budofe8cpev.pdfIn PDF document text
    • http://hookup753.fun/wuxilufdw5t.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/jdhgZev/suludukefuwofedaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505839/normal_5fe61b5760dc9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bipodolekade.rf.gd/xuxepadofewipiwudowukurob.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/twilight_saga_breaking_dawn_part_1_movierulz.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/55216811824.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/netaji.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/platform_boots_sale_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/openpyxl_delete_sheets.pdfIn PDF document text
    • http://dizaxobaka.rf.gd/10089303176.pdfIn PDF document text
    • http://lisunamubeso.epizy.com/quality_management_plan_template_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A8 5452 bytes
SHA-256: 28c94a93bfc3e773c4e5c2f14437774d10259b6496f2603c7c6b9569565fdd83
font_01_sfnt_off0001042e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042E 11548 bytes
SHA-256: c1f2a6d25603bea8f17662cac58962e12d2fd744ad17452fc3d3398ea9ae5ab8
font_02_sfnt_off00012b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B6B 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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