Malicious PDF — malware analysis report

Static analysis result for SHA-256 62182a55ef155493…

MALICIOUS

PDF

82.9 KB Created: 2021-04-04 04:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9be8e4ba3d5a4fa43a4e9c9ae5161930 SHA-1: b3e577d83eaac1acf9f51d3d0f9ab2ab48edf1b3 SHA-256: 62182a55ef1554939ca19c3cd881418f62cf9f52cf3984a50839a8dbb1a1235a
186 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a link farm and a credential phishing lure impersonating Spotify. The embedded URLs point to redirectors and disposable hosting, suggesting an attempt to obscure the final malicious destination. While no scripts were explicitly extracted, the PDF structure and URL analysis strongly suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://wijugiretatito.weebly.com/uploads/1/3/2/8/132814958/9503480.pdf.
  • 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://druttle.ru/123?utm_term=can+you++spotify+on+windows+7 PDF link annotation
    • https://wijugiretatito.weebly.com/uploads/1/3/2/8/132814958/9503480.pdfIn PDF document text
    • http://hookup157.fun/sorusibogak4pvi.pdfIn PDF document text
    • http://felezebelitex.iblogger.org/is_dunkin_donuts_iced_coffee_bad.pdfIn PDF document text
    • http://centerverifybadge.com/bafukujiwisevup120w.pdfIn PDF document text
    • https://woxoxoba.weebly.com/uploads/1/3/4/8/134893248/a91611f8117f019.pdfIn PDF document text
    • http://gagujusapiji.iblogger.org/77605133877.pdfIn PDF document text
    • https://kazamudadi.weebly.com/uploads/1/3/0/7/130775411/9fd17c7c7ab06.pdfIn PDF document text
    • https://puluzoxaxidu.weebly.com/uploads/1/3/2/6/132683087/2f312383a7cf47.pdfIn PDF document text
    • https://cdn.sqhk.co/lusimalifa/TM4LQie/food_wars_season_4_release_date_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/togixulala/Jgdiaib/77407566051.pdfIn PDF document text
    • https://cdn.sqhk.co/jebumujo/YgdW04v/zarenumuraju.pdfIn PDF document text
    • https://rodovijakul.weebly.com/uploads/1/3/2/7/132741348/gubamumenumo_kinomenisusav_pofimubi.pdfIn PDF document text
    • http://hisgohar.site/fulifewaserewilajatupa1idb6.pdfIn PDF document text
    • https://kaneloko.weebly.com/uploads/1/3/1/4/131408798/buzisomidupug.pdfIn PDF document text
    • https://xibowawagapuj.weebly.com/uploads/1/3/1/3/131383975/jadolosu_zuzewema_wuxemegivaxiguf.pdfIn PDF document text
    • http://7evenrp.ru/wubodifxt25.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/betty_botter_bought_some_butterhrap4.pdfIn PDF document text
    • https://fugunukotuji.weebly.com/uploads/1/3/4/5/134589730/89d19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rivuwasiwitovud.rf.gd/hindu_festival_calendar_2018.pdfIn PDF document text
    • http://xakarejosav.epizy.com/vosinuzunujudani.pdfIn PDF document text
    • http://tirujukixiw.epizy.com/vuferibodedemen.pdfIn PDF document text
    • http://mejesikiwabez.epizy.com/2642854897.pdfIn PDF document text
    • http://zakivijojinikij.epizy.com/68757851522.pdfIn PDF document text
    • http://bupagaruwizuzu.epizy.com/why_is_my_amazon_fire_tablet_charging_so_slow.pdfIn PDF document text
    • http://feramivo.rf.gd/microsoft_access_2017_free_full_version.pdfIn PDF document text
    • http://sosumanaxixit.epizy.com/as_3740.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_off0001068c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068C 5084 bytes
SHA-256: 187fa690a51923404cc193c5b0250247c89f6e48b67cc4eac7babe12819b1086
font_01_sfnt_off00011814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11814 10988 bytes
SHA-256: c54f1529808c3446f26cc11422894c233d78d63cca1f2eb6ee58bf4f68846c41

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