Malicious PDF — malware analysis report

Static analysis result for SHA-256 5041372414af9645…

MALICIOUS

PDF

75.9 KB Created: 2021-02-24 05:14:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 070007ad038be577ebe0a549102cd9a5 SHA-1: 671817edf4b10e87b75366acddc53f859f698775 SHA-256: 5041372414af9645f625879088a313f7e5c50bd38ad709f5c188564b67fbe4f6
134 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The presence of a 'download button' heuristic further suggests a lure to download a malicious payload. While no scripts were explicitly extracted, the PDF structure and external links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/123?utm_term=how+to+add+a+file+link+to+wix PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418987/normal_5fe14af1f1b35.pdfIn PDF document text
    • http://xojitufos.66ghz.com/xafutapebixiduzovubiwog.pdfIn PDF document text
    • http://ravujonawugip.22web.org/motagux.pdfIn PDF document text
    • http://vagijuderotogur.22web.org/bangalore_current_weather_report.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/elHwZhb/my_talking_hank_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/fLMhghc/photo_editor_online_free_jio_phone.pdfIn PDF document text
    • http://komamoj.22web.org/77154270226.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/hybhdhb/build_a_bear_harry_potter_hufflepuff.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://s3.amazonaws.com/jolozidabi/report_dangerous_driving_new_zealand.pdfIn PDF document text
    • http://godavuvexo.epizy.com/2460496389.pdfIn PDF document text
    • http://domumulavonevef.rf.gd/film_storyboard_format.pdfIn PDF document text
    • http://kofujuluzode.epizy.com/91696411325.pdfIn PDF document text
    • http://pepebejawu.epizy.com/solubility_curves_worksheet_answers_chemistry_if8766.pdfIn PDF document text
    • http://vakusidoler.epizy.com/checkers_rally_s_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/zufosuludisixofutakoril.pdfIn PDF document text
    • http://nawonuzegajosi.epizy.com/42661350180.pdfIn PDF document text
    • http://doninedu.epizy.com/10110113226.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/canson_a3_polypropylene_sheet.pdfIn PDF document text
    • http://badokelo.rf.gd/tesisosakowewijiwoke.pdfIn PDF document text
    • http://goduziposu.rf.gd/genulolevurewokopiviz.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_off0000df8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8E 4600 bytes
SHA-256: e5168c46bc60676b7deaf66488447bed0dda7d4d2a9fd53c4d219c8af7eb5568
font_01_sfnt_off0000ef4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4E 10724 bytes
SHA-256: b73fa6fac2670aca43645446edd23d39590c1cbdcab26712b1485d3448687eeb
font_02_sfnt_off000113f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F1 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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