Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf15670486f70491…

MALICIOUS

PDF

80.6 KB Created: 2021-03-25 16:19:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b6453d364bf94bd64aa18f599497fbec SHA-1: 3d15bcf23e21793098cb833a070f06fb816a388f SHA-256: bf15670486f70491bd8e7b35b1225697072ca8d133bc09d95e7d0a2018f6bdf0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/strik?utm_term=how+do+apple+employee+stock+options+work PDF link annotation
    • http://beautysss.site/gilipubarusupupovmk6fq.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvazuginu/KgjhaNC/cumberland_community_school_staff.pdfIn PDF document text
    • http://canonsburglake.com/97885314248oukq9.pdfIn PDF document text
    • https://cdn.sqhk.co/puzukebejas/5jawoid/anjanna_dj_songs_telugu.pdfIn PDF document text
    • http://fresh-ita.fun/show_back_button_in_actionbar_androidun7yx.pdfIn PDF document text
    • http://smartycredit.info/dumpy_level_user_guidejyx1v.pdfIn PDF document text
    • http://vebifitapex.mypressonline.com/18066329910.pdfIn PDF document text
    • http://wexebigusokata.iblogger.org/unscrambled_words_with_answers.pdfIn PDF document text
    • http://sexedate69.site/nuzojovesubarue2fua.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/EwIoKhj/nursery_rhymes_lyrics_meanings.pdfIn PDF document text
    • https://cdn.sqhk.co/razilipot/cGsU9ge/68808593464.pdfIn PDF document text
    • http://prizinsta.online/kotevigivesupekasegurojo7j09b.pdfIn PDF document text
    • http://sizupefujexebov.22web.org/zimapixezoxevegedeki.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/710fd0a5-9f6e-48d5-8390-24463f64eb47/7921022682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c594ea8a-ebd9-4a73-ad7b-1fdf3a1a2d5f/213213900.pdfIn PDF document text
    • http://zukomakiduw.myartsonline.com/amissulprida_bula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84641c98-fa25-46fa-8a83-6ac3fd08e451/motor_de_corriente_continua_y_alterna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53987b32-494a-4836-8965-07c58eb999c2/kivupuderelo.pdfIn PDF document text
    • http://pigutun.myartsonline.com/gogo_ultra_x_scooter_parts.pdfIn PDF document text
    • http://vuripuwap.epizy.com/major_barbara_brief_summary.pdfIn PDF document text
    • http://nabulegewuwal.myartsonline.com/lefesusog.pdfIn PDF document text
    • http://gogujigasad.onlinewebshop.net/sample_essay_outline_mla_format.pdfIn PDF document text
    • http://kumagubugudaxu.rf.gd/production_acide_sulfurique.pdfIn PDF document text
    • http://tifureboriva.epizy.com/5th_grade_math_test_worksheets.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_off0000fbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD9 5436 bytes
SHA-256: b01d021626fe66cffbe66727c6997e7576f8cb16521e84127ce25d380b31a893
font_01_sfnt_off00010e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E5B 11216 bytes
SHA-256: 09610721ca3937f156d63b6bb27a369c92657a4923669228bb78a709d6b7bc16

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