Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1016fb53b6816a…

MALICIOUS

PDF

80.7 KB Created: 2021-03-14 18:28:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: bbcb9694acc87beaab2f166024c018c7 SHA-1: d7f22a31b84858d586eec1b1e855a6bbee76ea7d SHA-256: fa1016fb53b6816adf297489f7eee460e6335ad8be8f65fb5aa35e624916d4bc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary suspicious URL pointing to a site offering 'nba 2k17 apk android download offline', suggesting a lure for potentially unwanted or malicious software. The PDF structure also indicates it's part of a link farm on disposable hosting, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/wix?keyword=nba+2k17+apk+android+download+offline PDF link annotation
    • http://vostokzapad.su/ev_connect_logovy6vs.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/jjhhjI3/volley_fire_poe.pdfIn PDF document text
    • http://ontrade.top/topakupipimuzokupaleehsya.pdfIn PDF document text
    • https://cdn.sqhk.co/nusideja/g8gddge/shadow_fight_3_cheats_for_android.pdfIn PDF document text
    • http://design-kvartira.info/83474270812nn6uj.pdfIn PDF document text
    • http://detonic-official.website/roue_de_la_semaine__imprimeruu80y.pdfIn PDF document text
    • http://uanews.website/pirakupalepebunajujotu6ewls.pdfIn PDF document text
    • http://smeshnoykir.space/99019081655eh2j3.pdfIn PDF document text
    • http://lg-copyrightforms.com/32526969071q65ts.pdfIn PDF document text
    • https://cdn.sqhk.co/modesarox/7GjbWx5/9957195194.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cac2eab-5aa6-4dbe-a6fb-41959ddf41c9/dd_spells_by_level.pdfIn PDF document text
    • http://diruben.rf.gd/international_business_management_books_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18f9039a-9c02-485c-b09b-bed21390867d/el_mundo_de_sofia_en_ingles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8da7fa55-3e32-4ca1-ac31-33ec7721045c/milady_cosmetology_book_chapter_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ba3a7d-4a49-42ef-acdf-ee6fc505a058/50617478398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d5f13c-cb44-4057-bf0c-35d2eb6860fe/66407109748.pdfIn PDF document text
    • http://bugudejekizukem.epizy.com/ashoka_full_movie_moviescounter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c41129f1-f87f-4f9c-915f-5b1364157b50/bulibodurejefulejurike.pdfIn PDF document text
    • http://fituxulilofe.epizy.com/canadian_flag_image_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c78e36d-3826-46d3-ba68-267333adcd01/96784381096.pdfIn PDF document text
    • http://rugiwixet.epizy.com/67813865191.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_off0000fd85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD85 5388 bytes
SHA-256: 0a4bd6e2066df19838680b8e0b4211be5d0dc8adfb2c9d9ff7ffb1e32983aacc
font_01_sfnt_off00011012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11012 11076 bytes
SHA-256: de7a029abf44f1540dbc3c79ca1b0de9ca729efea310e2731be275d644a06e46

Open this report in the interactive analyzer, or submit your own file for analysis.