Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6be69dc9a9a8ee1…

MALICIOUS

PDF

73.2 KB Created: 2021-05-17 01:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c2e4981bb4c2b84ada88e793f0e1448f SHA-1: 16444fa2252a57c96dc5ab86e69c5fa9ccac2f29 SHA-256: a6be69dc9a9a8ee18baf728006e63e1da8e4f4016e3ed244fb146b93eda9014e
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 0.9996

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://dugedepap.ru/strik?utm_term=conair+gs15rn+handheld+fabric+steamer+manual PDF link annotation
    • https://cdn.sqhk.co/xexisini/jdghijk/kendall_kylie_oversized_babydoll_dress.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/ragijesomupetitezooahl7.pdfIn PDF document text
    • http://meetsol.xyz/pathfinder_character_sheet_editable04f25.pdfIn PDF document text
    • http://wijofotezopadik.medianewsonline.com/vinuputimegofetuko.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/amelia_bedelia_goes_camping_reading_levelsv7rv.pdfIn PDF document text
    • http://lozhobelir.space/207803779467z072.pdfIn PDF document text
    • http://fsfsfd.xyz/283261239599lrlw.pdfIn PDF document text
    • https://cdn.sqhk.co/wazilisiko/JIPidNi/defense_zombie_hunter_idle_battle_rpg.pdfIn PDF document text
    • http://vutunema.mypressonline.com/67955349369.pdfIn PDF document text
    • http://mjawebdesign.net/giparulelazjf16a.pdfIn PDF document text
    • http://daniele.store/kms_activator_filehippozxt51.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/88284940477.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_952ca6389d2c4687be65f2047bfb97c8.pdf?index=trueIn PDF document text
    • https://d1ee23ee-9ccf-45b0-80ef-1e1ff1f657c4.filesusr.com/ugd/9ef0c3_0194773d96144fc1accef1e1dc03f823.pdf?index=trueIn PDF document text
    • https://cd489911-dc6d-4439-b408-84622343fb93.filesusr.com/ugd/d8e941_5bae63f2663244eb955ff40feb3f8f89.pdf?index=trueIn PDF document text
    • https://ab2ac9d4-4772-4872-829d-c19fde0a4f90.filesusr.com/ugd/b919b3_825a35b70d764264a15a54492d5eb425.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/53635389677.pdfIn PDF document text
    • http://vakifavu.onlinewebshop.net/78399130204.pdfIn PDF document text
    • https://cd65756b-a9c7-4cca-9498-1747a6459195.filesusr.com/ugd/05eb20_7cb5eabc2e7f46898fffdb29ef50111d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/goviwigax/94918194963.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/zawepifakobojevub.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/how_to_open_sentry_safe_with_key_but_no_combination.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_off0000e094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE094 5656 bytes
SHA-256: dacf7b0eab7beef822ad2be33c10f704ac9d9c1bc219b0550fbf40ac66ea2817
font_01_sfnt_off0000f3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B2 10480 bytes
SHA-256: a05719472d9a55eb2ca1a6e6bf381f017f5f89bab054f6db282b8ba06f42091e

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