Malicious PDF — malware analysis report

Static analysis result for SHA-256 2173f5ccd8821ce3…

MALICIOUS

PDF

78.3 KB Created: 2021-03-09 04:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2dd483ef3954d220803fe514cd760e4b SHA-1: 511c1c1197c3a629dbe9b4cd00b63a4eb2ff2dc4 SHA-256: 2173f5ccd8821ce3225a49dc36391fca9e036bcba34d6f1d0907441795ff64e7
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The embedded URL `https://lozipotod.ru/award?keyword=various+yoga+asanas+and+their+benefits+pdf` is identified as a redirector for free-download phishing. ClamAV also detected this file as a phishing trojan. No scripts were extracted, but the overall pattern suggests a phishing attempt to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://lozipotod.ru/award?keyword=various+yoga+asanas+and+their+benefits+pdf PDF link annotation
    • http://bigpleasure.ru/nys_dmv_cdl_road_test_paymentw8kfw.pdfIn PDF document text
    • https://cdn.sqhk.co/xapawavuma/j2hbha0/citizenship_test_without_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/hbFgajf/oneplus_6t_home_button_not_working.pdfIn PDF document text
    • http://org-fruit.space/zepularizeba352ds.pdfIn PDF document text
    • https://cdn.sqhk.co/rovujesox/4Injdm6/partisan_politics_definition_ap_gov.pdfIn PDF document text
    • https://cdn.sqhk.co/rumoligodo/0ciaigo/zombieland_song_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/ropimipaf/1icSgie/slice_of_life_sims_4_kawaii.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/idjetge/80532902311.pdfIn PDF document text
    • https://cdn.sqhk.co/pawekenu/fgjSf84/gijipivizin.pdfIn PDF document text
    • http://mexicotop.xyz/zosabebufomijijexvh98p.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/jaxdB66/mortal_kombat_11_aftermath_price.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvaworizon/egdFjhp/easy_cake_decorating_ideas_with_icing.pdfIn PDF document text
    • http://gmetry.online/52011664519gitya.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/fSheuhh/bricknoid_brick_breaker_game.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
    • https://s3.amazonaws.com/tobojelusiwi/define_computer_programming_and_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/602efd7c-f4b2-4ef0-a3b3-ea2fd4aeff0a/vovutos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8350ede2-7a3d-4519-8dbe-5e24fd98e312/9024765892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f1d653b-4ab9-49ec-a0de-d21786a791de/what_is_psychological_assessment_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/62974716762.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/spiderman_colouring_sheets_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643ec825-c1f7-4863-8994-6353bec2d327/sabertooth_990fx_r2_0_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91093876-8e1d-4000-94b8-2b28d11a9d1c/how_do_i_factory_reset_my_samsung_blu_ray_player.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/adjectives_worksheets_2nd_grade.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_off0000e963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE963 5360 bytes
SHA-256: be181299501878e167272979ae4f63623505049525c5cf739c1c6a7db304349d
font_01_sfnt_off0000fb96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB96 9900 bytes
SHA-256: 11546a9dbb774ee05a719d61b53da20af3feb3b98a84fb250abce06a1b92ef66
font_02_sfnt_off00011d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333