Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6395f965c9958b5…

MALICIOUS

PDF

82.0 KB Created: 2021-03-23 14:16:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 0646dabea3ac7cc56f1464e327914b5d SHA-1: 5aae289e37f95c5c1935e1577202bbff1e4c050b SHA-256: f6395f965c9958b5d5dbca5f837065e62d40cb692493513f63d3086f6e28e3ab
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with one prominent link pointing to 'https://midufefew.ru/strik?utm_term=how+to+add+paypal+to+wix', suggesting a phishing or malware distribution attempt. The 'SE_INVOICE_LURE' heuristic further supports that the document's content is designed to trick users into clicking on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/strik?utm_term=how+to+add+paypal+to+wix PDF link annotation
    • https://kuwovewifinux.weebly.com/uploads/1/3/0/7/130775990/9574647.pdfIn PDF document text
    • https://zasiranel.weebly.com/uploads/1/3/4/5/134507270/8dbe30ad9e.pdfIn PDF document text
    • http://justiciaforjustice.com/90679013888hr2tf.pdfIn PDF document text
    • http://livecopyrightverification.com/3899776108khh0z.pdfIn PDF document text
    • http://luminar3-download.xyz/gigilixazazarapejivozfgr93.pdfIn PDF document text
    • http://com-connexion.xyz/lil_yachty_free_k_upreme_freestyle_lyricss8bri.pdfIn PDF document text
    • https://jenejipita.weebly.com/uploads/1/3/4/4/134473981/kovelit.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/wuzuwabivumirezo.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/sosupejuxofedo/viluvelemugekimemiki.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/kinetico_water_softener_for_sale_craigslist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a280dc2-1ec8-42c3-84b8-14585cc16c08/53107176427.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/months_of_the_year_printables_for_preschool.pdfIn PDF document text
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_3bf83698c58e4e0fac3372c1207994b7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/54a78ee0-7156-46ea-89b1-e44c47eb6af0/23760369251.pdfIn PDF document text
    • https://04934832-22f3-474e-96de-b9d593e92251.filesusr.com/ugd/f390e7_7202ac95b6ba4d8caeb5f5b0965d6996.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pipaneku/brother_print_wont_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/office_inauguration_invitation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/77454280956.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/20302525377.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/73054519691.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/lonely_boy_images_with_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d768331-9c7f-4f93-a684-c7e9a8480d7a/hp_laserjet_p3015_remove_cartridge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79b9f8e4-7849-4320-891f-1ca105bc68b8/13621284404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5305817-52c9-406e-ad81-905a1c5985ad/debimimizep.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_off00010245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10245 4900 bytes
SHA-256: c65627bf250c1c32958cc606b476d36ba78f05e687e2a5293ee4ad633e8774db
font_01_sfnt_off00011322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11322 11232 bytes
SHA-256: 390267d36316bd09a485e75ead67765d2f4e6b6bd24a4afafab7ebb3b221af61

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