Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccbfe098bce49a84…

MALICIOUS

PDF

97.3 KB Created: 2021-05-04 05:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cc1a6947ce15cf203b57eefc8ba57cc4 SHA-1: 99e239876b7d30289468e10e6418496a81f1d533 SHA-256: ccbfe098bce49a8497f5c108aa46b02b6f4d775d8313257134d4818e0016993e
126 Risk Score

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 0.9965

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://leonvi.ru/strik?utm_term=la+divina+comedia+resumen+por+cantos PDF link annotation
    • http://bazuzog.22web.org/how_to_draw_comic_book_style_step_by_step.pdfIn PDF document text
    • https://cdn.sqhk.co/gopepilexafi/jbLjcij/nibobupijowabeluzirebafe.pdfIn PDF document text
    • http://motarojetox.sportsontheweb.net/what_is_the_most_difficult_question_for_a_forensic_psychologist_to_answer_correctly.pdfIn PDF document text
    • http://gimatadokij.mygamesonline.org/jowuwopep.pdfIn PDF document text
    • http://tajuliwelofiti.medianewsonline.com/how_to_use_financial_calculator_to_calculate_pv.pdfIn PDF document text
    • https://cdn.sqhk.co/vajirasavuz/hIvBhio/76842932521.pdfIn PDF document text
    • http://csxmoney.info/2628584195ph28t.pdfIn PDF document text
    • http://vigastlens.xyz/mokilofositafemowuvap9bq0t.pdfIn PDF document text
    • https://cdn.sqhk.co/savujegu/hRjiigW/garden_answers_plant_identification_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fowipovoji/ghoZjaR/warudosekiwokovop.pdfIn PDF document text
    • https://cdn.sqhk.co/futidiwe/hdVjdHG/michelin_camping_guide_france_2019.pdfIn PDF document text
    • http://cashbackmoney.info/949841428539qpph.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/bhhqjc8/true_skate_glitches_2019.pdfIn PDF document text
    • http://vipmanmarket.space/oster_steamer_replacement_partsqoohj.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzudulo/hfghheE/solar_system_planets_information_song.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/jfKl5rM/78673083430.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/neopost_is300_series_franking_machine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pazatirademe.rf.gd/linen_sheet_set_bed_bath_and_beyond.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/82944230064.pdfIn PDF document text
    • http://vuruwabudakase.epizy.com/fmcg_report_vietnam.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/61283091569.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/vitamin_d_supplementation_in_adults_guidelines.pdfIn PDF document text
    • http://texatutegelemov.rf.gd/daguzoxatasenuneki.pdfIn PDF document text
    • http://rukinozo.epizy.com/73302792517.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/31560127628.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/94617622906.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_off00013ccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CCD 5188 bytes
SHA-256: 133751f40cb6126e1b79ec2422f9e963a4cab36f049fa0b5d8c330de7bbd395e
font_01_sfnt_off00014e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E6A 12220 bytes
SHA-256: fa7ff643d7a50c226d5e691a8cb3e9a14878bcf2d5051410ff187b4fb0a9a481

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