Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4b1e57b512934c…

MALICIOUS

PDF

88.9 KB Created: 2021-03-29 19:55:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6045c4bd13ec0b81de95ceb3c806d3b5 SHA-1: 9e6a0b3a3b470f50c107e129d6f19f45fd62917d SHA-256: 9e4b1e57b512934c621ba05e3bfa48582714172e814dcc13a5f514f37c0e25d5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs disguised as movie downloads, 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 links are characteristic of social engineering lures designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/wix?keyword=ek+thi+daayan+full+movie+online PDF link annotation
    • http://ideaita.fun/what_are_examples_of_investment_incentives1efxc.pdfIn PDF document text
    • http://gajuduxotam.iblogger.org/bermuda_triangle_book_download.pdfIn PDF document text
    • http://letgtma.bid/79805332154dcsy1.pdfIn PDF document text
    • http://axecheat9.xyz/vudenokojux45gyc.pdfIn PDF document text
    • http://navaram.online/psicogenesis_de_las_enfermedades_mentaleso9tpo.pdfIn PDF document text
    • http://albl.ru/autocad_2016_student_product_key8wi01.pdfIn PDF document text
    • http://uablog.website/tibewuxeralaxulopat07uhw.pdfIn PDF document text
    • http://legalvictory.group/find_the_sum_of_the_measures_of_the_interior_angles_of_each_convex_polygon_11-goniuzpf.pdfIn PDF document text
    • http://prosucre.pro/como_se_hace_una_fotografia_documentalklbis.pdfIn PDF document text
    • http://nesobaka3.xyz/zikenagazalekolavurozemr8hvf.pdfIn PDF document text
    • http://itsamorem.com/the_story_of_an_hour_ploto1cm7.pdfIn PDF document text
    • http://amst-watch-v2.club/royal_chaos_redeem_code_2020_october5h6vk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kasazupolixugi.epizy.com/64361243112.pdfIn PDF document text
    • http://tebexuvizo.rf.gd/the_adjustment_bureau_full_movie_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/ulysses_poem_annotated.pdfIn PDF document text
    • http://fusarafabar.epizy.com/xebunanuro.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/black_and_decker_gh1000_spool_cap.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/love_island_app_mean_tweets_answers.pdfIn PDF document text
    • http://gikasabedadex.rf.gd/sensory_language_graphic_organizer.pdfIn PDF document text
    • http://muvosexuwefap.epizy.com/3d_map_of_world.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/vajoxazepotuduxutupodinon.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/gejuw.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_off00012075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12075 5056 bytes
SHA-256: 8bf3b977a3c9e5725b2cc2e3ae4cda7727a9095e858a499836a48b34625de1d8
font_01_sfnt_off0001319c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1319C 10728 bytes
SHA-256: c53b56948ea557991c300a8c29675366313adb1c3f532f3dfd3317b160c81ca9

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