Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca2c7ddaf972dd3…

MALICIOUS

PDF

76.9 KB Created: 2021-03-20 09:08:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 85ac5501b9a54f432c53f376b494bd6b SHA-1: 2a43de23ebb0beb538de367ae411e83e183b5bbf SHA-256: dca2c7ddaf972dd3ad58430ce82e87bcef9917fd480f2214b9fae580e648467f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs pointing to various domains, many of which are associated with link farms and disposable hosting, indicating a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains keywords related to live streams, suggesting a lure for potentially harmful content.

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://resalured.ru/wix?keyword=khan+vs+canelo+live+stream+online PDF link annotation
    • http://getallcreditscores.info/99702918798g359r.pdfIn PDF document text
    • http://1xbet-registr.site/world_war_z_on_netflix_australiammk7o.pdfIn PDF document text
    • http://karnaval.host/gran_turismo_2000ugcri.pdfIn PDF document text
    • http://findssldz.xyz/how_to_needle_a_sewing_machinebdrc5.pdfIn PDF document text
    • http://shlifovka-pol.website/49257427295zsh66.pdfIn PDF document text
    • http://itawegan.fun/dokopagibefaloqvtdi.pdfIn PDF document text
    • http://swiss-gear.store/temifex56fu.pdfIn PDF document text
    • http://zifasito.22web.org/chrome_latest_update.pdfIn PDF document text
    • http://idem-peshkom.ru/andrew_wommack_healing_university2lr5w.pdfIn PDF document text
    • http://vukuwupevipe.iblogger.org/beautiful_disaster_jamie_mcguire_online.pdfIn PDF document text
    • http://pc-remont.website/sunbeam_heated_mattress_pad_f2_error_code6110t.pdfIn PDF document text
    • http://bestsalestoday.xyz/unix_shell_programming_book_by_yashwant_kanetkarf6pkq.pdfIn PDF document text
    • http://alifan.store/68235389469odbm5.pdfIn PDF document text
    • http://rujawobezixevib.iblogger.org/100_embroidery_stitches_book.pdfIn PDF document text
    • http://boomua.site/greek_gods_and_goddessest4twj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vebefabose.epizy.com/20242366616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6757804-c95c-4644-9a40-70fc3bb77332/do_flip_phones_have_a_sim_card.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/354ef509-23f1-4047-ac08-0262003cc898/descargar_biblia_de_nuestro_pueblo_gratis.pdfIn PDF document text
    • http://pavebutom.epizy.com/bezazajuxofodezasukivet.pdfIn PDF document text
    • http://rajixubododafu.epizy.com/how_to_set_time_on_eheim_fish_feeder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4fc9420-1eca-408a-835d-06534f587b67/ragikoguganixijozirivemej.pdfIn PDF document text
    • http://rurezisenujimu.rf.gd/excel_sheet_for_inventory_tracking.pdfIn PDF document text
    • http://xoluwemulejunow.epizy.com/norapupuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1d16ef8-a5a0-4705-ab75-34d5c909d94d/71976713355.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_off0000edd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD5 5068 bytes
SHA-256: 9c8f019609ffba4f3f8572b776e8dc2c25ab0b0e1c9e100f22cac7d5360482dc
font_01_sfnt_off0000fef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF2 11908 bytes
SHA-256: e07b61c191ef1ed2438bb2613446b441cfcffab43d78c36eb01fd50ba3b05aa5

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