Malicious PDF — malware analysis report

Static analysis result for SHA-256 49008139b9672d32…

MALICIOUS

PDF

71.2 KB Created: 2021-03-08 12:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c54e49a9d0d4ae04c4918eed4d2bc8a3 SHA-1: efd20d754a914a8529accaf516d7a662be161838 SHA-256: 49008139b9672d32793a1f42d52ff19516a2e1870c686f7a53bfc2ea85a732d8
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with the primary one being 'https://midufefew.ru/award?keyword=beast+mode+soccer+pdf'. Heuristics indicate it's a link farm on disposable hosting, and ClamAV detected it as 'Pdf.Phishing.Trojan'. The ML classifier also flagged it as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://midufefew.ru/award?keyword=beast+mode+soccer+pdf PDF link annotation
    • http://mobile-media.moscow/99060125663xqazg.pdfIn PDF document text
    • https://jileninaniwepuz.weebly.com/uploads/1/3/4/7/134771173/rutuserexolidoxadu.pdfIn PDF document text
    • http://sentytld.online/national_lotteries_board_sri_lanka_annual_reportcalrc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410217/normal_6002a7d510fbd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486363/normal_5fcecbd1b2993.pdfIn PDF document text
    • https://roxejane.weebly.com/uploads/1/3/4/4/134486752/d394b78cd3.pdfIn PDF document text
    • https://navemozozaju.weebly.com/uploads/1/3/1/1/131164567/8294572.pdfIn PDF document text
    • http://uptodate.site/avast_battery_saver_apk_pro8jbzw.pdfIn PDF document text
    • http://sallehq.xyz/55303982455ldcl6.pdfIn PDF document text
    • https://tebifenan.weebly.com/uploads/1/3/4/6/134675993/suvesexoso-wovuxiwololora.pdfIn PDF document text
    • https://nunofisodopuw.weebly.com/uploads/1/3/4/2/134234763/205d037530a364.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448735/normal_60260c6ce5b84.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/37730599559ij0ey.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/fb322090-002f-464b-86c7-0ef73c066159/reparto_de_la_pelicula_perdona_si_te_llamo_amor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63bc8554-5581-4286-9e14-4e8fbf432f51/sakazazo.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/lirr_hicksville_to_woodside_ny.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/86143194339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/141fc2ed-71b3-46de-b6af-d2941bacfbae/what_is_the_best_fitness_equipment_for_home.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/mantis_tiller_4_stroke_engine_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/how_long_do_you_cook_a_turkey_in_an_infrared_fryer.pdfIn PDF document text
    • https://8ca15cf9-c5bf-4329-906a-32df3c7b5ab7.filesusr.com/ugd/4ca7f5_e7b784cda98d4875a86db9ed75e18642.pdf?index=trueIn PDF document text
    • https://ce83042b-5faf-46b5-bcbb-9b4d05ec7d33.filesusr.com/ugd/a31856_6d0718f178a94cd0a589e0f69571b442.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rerinago/valkyrie_connect_reroll_guide.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_off0000da75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA75 5320 bytes
SHA-256: 287120d8e02b2df245363e68ba04b0752addbdb9619cb9aace5b1302140908cc
font_01_sfnt_off0000ec73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC73 10348 bytes
SHA-256: 2e7c9bdd8cba9f06006e3c7c7b2eac11bcb8aca30181a5e101e739c10e89097d

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