Malicious PDF — malware analysis report

Static analysis result for SHA-256 545fae4785205bcb…

MALICIOUS

PDF

83.2 KB Created: 2021-04-04 04:03:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1ee48e1408b6835863266bfc44e0af35 SHA-1: 8ef970c2a409b2a27b514fac8ee6feb23fb33b77 SHA-256: 545fae4785205bcb301d3c1bb0791f3bf2a3fc8e534b2231f8d761e1576cc49a
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 flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to YouTube and file downloads, aligning with a lure to a malicious website.

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://midufefew.ru/wix?keyword=john+fogerty-diggy+liggy+lo-youtube PDF link annotation
    • https://cdn.sqhk.co/rasepotobami/hjhjijD/xison.pdfIn PDF document text
    • https://cdn.sqhk.co/difusivoga/igjeD8x/android_rotate_image_without_bitmap.pdfIn PDF document text
    • https://cdn.sqhk.co/zumedizojas/djaLjid/neha_kakkar_all_new_song_downloadming.pdfIn PDF document text
    • http://rimiminigi.22web.org/how_much_does_a_mechanical_engineering_degree_cost.pdfIn PDF document text
    • http://dimax.website/where_does_the_story_the_veldt_take_placer230v.pdfIn PDF document text
    • https://cdn.sqhk.co/zufuxirap/i9ijhc0/michael_myers_halloween_wallpapers_iphone.pdfIn PDF document text
    • http://silkhfig.bid/exosuit_high_capacity_inventory5m0ph.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • https://cdn.sqhk.co/pemanunid/dyhgIRU/avg_cleaner_pro_apk_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/digiwejasipu/ggjg4je/ufc_254_schedule_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/jjZXBJH/51171035554.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://uploads.strikinglycdn.com/files/38677f56-bd38-43b2-851d-3cb52a77acdf/74884673158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af4b10b7-1145-44ac-a6a6-41ed4420de37/black_ice_cream_near_me.pdfIn PDF document text
    • http://vomalowo.epizy.com/answers_for_clash_royale_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59f2c676-937d-4451-953a-f5780250dedc/do_premier_protein_shakes_make_you_constipated.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9aa970d1-aa0d-4671-813b-b12b85af3efb/62882258043.pdfIn PDF document text
    • http://logedulon.epizy.com/10490916606.pdfIn PDF document text
    • http://bedegotix.epizy.com/46304947968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abb199f7-1f7f-43ce-a633-473067a76e67/sepekogeninutitapokosibim.pdfIn PDF document text
    • http://zuwogupewukefet.epizy.com/fuxokobidigonodanato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d5d1388-59a7-40b3-a578-e48e9ada2deb/regutofusakisezonarusizu.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_off0000f954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF954 4928 bytes
SHA-256: 87953a0cd2782ea66541235abfac27a454d8f8fab2abbda535f76b51f09dab66
font_01_sfnt_off00010a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A15 11844 bytes
SHA-256: 551e1293b53fa78dbedeb8bbecef4eb9ef30f798566401181377b43b49b5673c
font_02_sfnt_off00013145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13145 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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