Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65cfb18c9826d0f…

MALICIOUS

PDF

89.4 KB Created: 2021-04-30 06:29:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d1358b157b03291be84a78b43a0229e1 SHA-1: 9e6c4aa9bddb12fe932761e6c745b2f942476486 SHA-256: d65cfb18c9826d0f77e2579fc0c3a5471738c6a98e59b401433ab972a2cf31b3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://xezojetit.ru/strik?utm_term=the+peripheral+route+to+persuasion PDF link annotation
    • https://cdn.sqhk.co/bomumuxa/gie5dUS/90305431697.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381964/normal_5ffb8642ed039.pdfIn PDF document text
    • https://geduwitanezuter.weebly.com/uploads/1/3/0/7/130738684/6384778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426415/normal_60521a8cbd068.pdfIn PDF document text
    • http://cookwellbakewell.com/bigger_leaner_stronger_workout_programm9git.pdfIn PDF document text
    • http://gdztut.com/calories_in_taco_bell_toasted_cheddar_chalupakjc4x.pdfIn PDF document text
    • https://xesevurodat.weebly.com/uploads/1/3/0/9/130968943/0bf151.pdfIn PDF document text
    • https://vigodozoxofi.weebly.com/uploads/1/3/4/5/134599787/5005526.pdfIn PDF document text
    • https://cdn.sqhk.co/wofazexej/cgiZQ8N/xulanufuledadiw.pdfIn PDF document text
    • https://cdn.sqhk.co/tubefajuvolu/dND7O57/fijowiboxumelerabejuzesu.pdfIn PDF document text
    • http://dronextactical.xyz/how_to_install_badger_insinkerator0vzf7.pdfIn PDF document text
    • https://cdn.sqhk.co/rapaxino/GXiiggb/realpolitiks_new_power.pdfIn PDF document text
    • https://cdn.sqhk.co/fasegibuniz/4hhoOii/1037581330.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/juzinaramip/chemistry_lab_report_introduction_example.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/ram_booster_apk_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d876e97-89b6-4976-ac4f-cb651a38ada1/32800713224.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/descriptive_analysis_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/conventional_non_occupant_co_borrower_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b6f8a97-4a82-41da-92ed-f6d40723a8ad/nolisudewowupumugavuz.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/jstl_format_number_locale.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F74 4856 bytes
SHA-256: 7f10a5a070e75f96c97e37626cacdc945273eb58d52db9d7573b289cc0ff90df
font_01_sfnt_off00011fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FEC 10492 bytes
SHA-256: 0bbb30b9529aa73181ca4def9b2a423bee8327c93bb8e82776d3d825e4abd6c0
font_02_sfnt_off000143d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143D7 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

Open this report in the interactive analyzer, or submit your own file for analysis.