Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0afcd790f478da6…

MALICIOUS

PDF

80.7 KB Created: 2021-03-07 22:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 278006f8a62a0c197f7cd4e7e75ee73d SHA-1: fbe1f15a68feaf65a76016c1ac614fdf227b171d SHA-256: f0afcd790f478da622a4f09cb938df062c96d0d11376859bf3f428e5f6c7f385
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('ponafet.ru') that is flagged as external. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains references to URLs, suggesting a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://ponafet.ru/wb?keyword=como%20configurar%20un%20control%20universal%20rca%20para%20tv%20lg PDF link annotation
    • http://bufo.online/vezalimubupufe6tjrf.pdfIn PDF document text
    • https://lutasuboli.weebly.com/uploads/1/3/2/7/132740498/jusugarinovagimisinu.pdfIn PDF document text
    • http://guzexesuge.mypressonline.com/united_methodist_hymn_book_download.pdfIn PDF document text
    • http://online-bestshop.xyz/sudopagjgt7s.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/h2o_mop_x5_dual_blast_steam_cleaner_with_accessories.pdfIn PDF document text
    • http://otomail.business/thea_stilton_graphic_novels_in_orderr2a5t.pdfIn PDF document text
    • http://datingsexchat.site/88711276141cc4nz.pdfIn PDF document text
    • https://rolurenogilu.weebly.com/uploads/1/3/4/0/134096536/nezajoj.pdfIn PDF document text
    • https://laregupofonel.weebly.com/uploads/1/3/4/4/134464195/letupujuzazux_pegeberujotuziz_marivu_zukapeboz.pdfIn PDF document text
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/zijonuvev-tutemesiwexaral-debepenerikug.pdfIn PDF document text
    • http://bonus332.site/milady_chapter_20_answersy1jr6.pdfIn PDF document text
    • http://alania365.ru/extending_mendelian_genetics_worksheet_answers1t3b4.pdfIn PDF document text
    • http://sfhgfje5df.xyz/vafovevupexuxulejepidut7e3lf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/cisco_router_2900_datasheet.pdfIn PDF document text
    • http://zuputes.atwebpages.com/why_do_my_eyes_hurt_to_look_up.pdfIn PDF document text
    • http://vekemifapujev.rf.gd/94978052423.pdfIn PDF document text
    • http://nenedabex.rf.gd/pababilorozoxujukenokux.pdfIn PDF document text
    • http://pogetowem.onlinewebshop.net/13118057738.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/chicco_keyfit_30_base_seat_belt_installation.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/ponosemuwexezozazabanere.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/asus_laptop_x453m_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/leaving_cert_french_exam_paper_answers.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_off0000efc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC7 5300 bytes
SHA-256: e37158bd4a332a0acc65d7085dcd44ff7ec0ba8ed591495cf85cabfb05deeeb9
font_01_sfnt_off000101be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BE 2272 bytes
SHA-256: 67e806451caa784eca3014dcd67b22ccf1ff1f31015b780e524be331e5f516e0
font_02_sfnt_off00010bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDA 12136 bytes
SHA-256: e5c37fd4f260fc1fb714d67d213cde7086244385c6ed976265c7216166e7176e

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