Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3e0b9b3e628ca8…

MALICIOUS

PDF

83.2 KB Created: 2021-03-17 11:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7c358c486ef21ebbd41322e2c7f0fbee SHA-1: b37c50350a88a14466502e3c5597350326eccd26 SHA-256: de3e0b9b3e628ca871abb0c1b09a5d92d1e67fae02e2a38605b0ecc25e9c6e11
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 0.9990

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://resalured.ru/strik?utm_term=how+to+adjust+fossil+watch+time PDF link annotation
    • https://cdn.sqhk.co/veletafi/jeic1aj/world_cup_2022_host_stadiums.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvuwoki/TSGYhd5/la_dodgers_logo_vector.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuravaxoxi/mhipjeG/bookkeeper_exam_study_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/murafabu/jwidjhi/best_black_forest_cake_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/rubuxupab/J8agdgd/linigene.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/vertebral_joints.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/hjgiZCG/special_warfare_operator_salary.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/ybHii9v/vixetikugi.pdfIn PDF document text
    • https://cdn.sqhk.co/fafegatoko/igeuFN7/real_robot_fighting_2018_robot_game.pdfIn PDF document text
    • http://tells.fun/c_programs_in_hindivwp7c.pdfIn PDF document text
    • http://trendmobile.ru/gozexajosoxarekovesimahqjix.pdfIn PDF document text
    • http://salizurewaki.mypressonline.com/dobisoxabupeputaw.pdfIn PDF document text
    • https://cdn.sqhk.co/siripeka/aBihabA/22121142978.pdfIn PDF document text
    • https://cdn.sqhk.co/lizubenesowi/jhgeieH/29538428537.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/ifkhj1A/text_twist_2_unscrambler.pdfIn PDF document text
    • https://cdn.sqhk.co/wetaxawirewu/ichfheN/wapixevebawage.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/frjiLI5/toon_blast_cheat_codes_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/ewjhibe/55715757295.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/desenaz/maths_worksheets_year_8.pdfIn PDF document text
    • http://kaxuwenewutexu.myartsonline.com/how_do_i_reset_my_nec_phone_password.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/physics_1250_lab_manual_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/how_to_set_up_directv_remote_control.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/zotojefefetoropigenoxe.pdfIn PDF document text
    • http://sugamane.onlinewebshop.net/ancestral_worship_in_african_traditional_religion.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_off0000f8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D5 5072 bytes
SHA-256: dfa92d6872153201e0a52a74a3a7a909d176abd47401185ad90b68c1226fb1d3
font_01_sfnt_off00010a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2C 11448 bytes
SHA-256: 2c8002af2efe85be25e134a38133ce44bd1164f464eb84bccd138cca510df095
font_02_sfnt_off000130c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C7 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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