Malicious PDF — malware analysis report

Static analysis result for SHA-256 024e7e34ce3f2da3…

MALICIOUS

PDF

78.0 KB Created: 2021-05-01 08:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6bf1a2ecdea939d7c396aa8378e6cbce SHA-1: 733c619072925e9144af2ba4e5c60b8e8416591c SHA-256: 024e7e34ce3f2da3bc0f81b912bfe351a2be2701dc9fd8c6bc244bdb4d2e6cc3
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a prominent one leading to a domain associated with phishing and link farming. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing sites or download further payloads. No scripts were extracted, but the PDF structure and URL analysis point to a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jumiwimov.ru/strik?utm_term=how+to+restart+water+heater+pilot+light PDF link annotation
    • http://naturfresh.space/541683332027x3s7.pdfIn PDF document text
    • http://zuvibig.22web.org/cingular_flip_2_manual.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/lixufugovakutenexerijub2eys.pdfIn PDF document text
    • http://helplnstagramoffice.com/acer_aspire_v5_battery_originalf5t0e.pdfIn PDF document text
    • http://tibetterrier.ru/5442253911paiy6.pdfIn PDF document text
    • http://basiditdcf.space/wijunukigenuwedumifix5b9l.pdfIn PDF document text
    • http://ekzo-fruit.ru/wooden_block_puzzle_classic63lhm.pdfIn PDF document text
    • http://selectgetc.top/11093983752uy8vt.pdfIn PDF document text
    • http://kostlike.site/jotujix4tia1.pdfIn PDF document text
    • http://it50life.pro/chopin_waltz_op_64_no_1_sheet_music4h3de.pdfIn PDF document text
    • http://mbfsopg.com/ley_de_biotzrqhl.pdfIn PDF document text
    • http://pewezeje.22web.org/marguerite_duras_the_lover.pdfIn PDF document text
    • http://ihsteam.ru/management_information_systems_degree_descriptionhvzpm.pdfIn PDF document text
    • http://kalekoneta.iblogger.org/vadomabutemajud.pdfIn PDF document text
    • http://world-wildshop.com/4122976564993ho4.pdfIn PDF document text
    • http://lordtrans.ru/rarisotanisu6ekb.pdfIn PDF document text
    • http://esclub.pro/troy_bilt_power_washer_pump_replacement32xj9.pdfIn PDF document text
    • http://antonioit.space/85041115713nfvmh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wirokafimuda.epizy.com/anaclitic_depression.pdfIn PDF document text
    • https://abe99a74-823b-4c5d-85d6-f8d8de52422f.filesusr.com/ugd/73cc63_5db80f09acd94e57b98e262a74ac5599.pdf?index=trueIn PDF document text
    • https://e824aeac-d22a-4b45-bb3c-17051d6ee04f.filesusr.com/ugd/de60da_ba88eb5325d542e88a2438036f46fac9.pdf?index=trueIn PDF document text
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_7a9e6b1410f44807aa19a5d11e355183.pdf?index=trueIn PDF document text
    • http://mibesajaku.epizy.com/aaos_knee_strengthening_exercises.pdfIn PDF document text
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_d73182c7a17648ecaf10f23eb9180ce2.pdf?index=trueIn 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_off0000f331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF331 5136 bytes
SHA-256: 95105ec1ecb0ff27427a4418c77df30ca52b420c74bb0ab1677d0ccdb7249711
font_01_sfnt_off000104b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B6 10884 bytes
SHA-256: 6c4ff52e0222a891b6ecf6a574552901e2e69decaf6e171e3ac8fd79c6fa1947

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