Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe75ad9b7ea4c889…

MALICIOUS

PDF

82.3 KB Created: 2021-05-08 11:26:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: fb70580a9baef6417213b998a9914967 SHA-1: 63135787330c309d9d49b22560d60e1628e7aad8 SHA-256: fe75ad9b7ea4c8891ea9ba9d2fdf9ab03e3698ee86ff2dc6c0b995162da91665
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing lure. The embedded URLs are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/strik?utm_term=idylis+humidifier+filters PDF link annotation
    • https://voxepobar.weebly.com/uploads/1/3/4/6/134668427/revirud.pdfIn PDF document text
    • http://wudaxozibutix.sportsontheweb.net/tigazudonatenebowipewin.pdfIn PDF document text
    • https://toxedozopofezi.weebly.com/uploads/1/3/1/4/131453782/1070299.pdfIn PDF document text
    • https://disipewadapa.weebly.com/uploads/1/3/4/8/134870645/7f8399bf.pdfIn PDF document text
    • http://fijexojor.getenjoyment.net/pedabogedos.pdfIn PDF document text
    • http://fabujisaw.mygamesonline.org/future_contract_vs_forward_contract.pdfIn PDF document text
    • http://kosonetibekub.medianewsonline.com/knee_ligaments_anatomy.pdfIn PDF document text
    • https://linabodaku.weebly.com/uploads/1/3/1/1/131164293/fojiperovix.pdfIn PDF document text
    • http://rimarilomikozu.medianewsonline.com/firikinumevitenapuruvuvom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d2ae5778-4744-4708-9549-92b4294a610a/greek_baby_girl_names_and_their_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/660d8c7f-b8dd-4c43-99b6-1ab4955ea04d/60271584788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd99daf-1e4e-404e-9917-3ce4d41727a5/xesopuxilomisov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00d0758f-61c7-4b39-b43d-e3e334d93b6a/what_is_the_concept_of_rehabilitation.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/1080p_wallpapers_for_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/citroen_c4_cactus_manual.pdfIn PDF document text
    • http://lewinozed.atwebpages.com/16477991976.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/bisaz.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/branding_style_guide_template_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efdc84aa-ae3e-4e64-9c4b-9385a20c73e4/pearson_prentice_hall_algebra_1_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/bewoxedewex.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/boney_m_audio_songs_free.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/buku_akuntansi_keuangan_syariah.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/91653371340.pdfIn PDF document text
    • http://diwadakerinepix.myartsonline.com/calligraphy_alphabets_for_beginners_book.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/18479998413.pdfIn PDF document text
    • http://fuluxewamotate.atwebpages.com/bimaxebu.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_off0000f56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56E 4640 bytes
SHA-256: 7bbbc3680e6dd60d49953ad22c973e452898d3fb4d6c3c2e38e6d40dd641ab92
font_01_sfnt_off0001052c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052C 12216 bytes
SHA-256: 86bd56ddd544dbf8b75a2d51f352edf9a8ebe5716e74c1d01b118e1e39095796
font_02_sfnt_off00012d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D9D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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