Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de5669e52ca103a…

MALICIOUS

PDF

75.0 KB Created: 2021-03-27 21:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0931d5ca09a7d9637c1ab6cfecc08383 SHA-1: a4926f2aa3d702173bf19ea2ac3a2fb3c35b6cb7 SHA-256: 7de5669e52ca103ac7eb14ecb356f1361103d9d7c9860d73ed4712b90bf0e89a
154 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's a link farm designed to redirect users. The presence of embedded URLs and lures like 'QR scanner apk for pc' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://seumenha.ru/wix?keyword=qr+scanner+apk+for+pc PDF link annotation
    • https://rozinezo.weebly.com/uploads/1/3/1/6/131636990/dixujik.pdfIn PDF document text
    • http://foyou.store/515387540477x3xi.pdfIn PDF document text
    • http://wabaxifejem.sportsontheweb.net/jawaj.pdfIn PDF document text
    • https://xodobojedabime.weebly.com/uploads/1/3/4/6/134675451/7263535.pdfIn PDF document text
    • http://fexabudobix.getenjoyment.net/cracker_barrel_nutrition.pdfIn PDF document text
    • http://belofakomag.mywebcommunity.org/83925873897.pdfIn PDF document text
    • https://bexenexitefixu.weebly.com/uploads/1/3/4/7/134725849/1653264.pdfIn PDF document text
    • http://axacheat4.xyz/us_online_apparel_shoppingqr092.pdfIn PDF document text
    • http://leaninrzpd.site/bangla_calendar_2019_appcera8.pdfIn PDF document text
    • http://uablog.website/16869556826osx8d.pdfIn PDF document text
    • http://mavpa.fun/77892928715uoek9.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/suximawo/jaspersoft_vs_jasperreports.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/easy_boogie_woogie_piano_free_sheet_music.pdfIn PDF document text
    • http://talizojewebovob.rf.gd/commercial_invoice_template_uk_ups.pdfIn PDF document text
    • http://repibikapowa.epizy.com/voxozak.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/agreed_ways_of_working_for_handling_information.pdfIn PDF document text
    • http://jatojitax.rf.gd/blackboard_collaborate_ultra.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/brochure_template_word_medical.pdfIn PDF document text
    • http://wetepizibora.rf.gd/gogemakovobujowapab.pdfIn PDF document text
    • http://kajopulijus.epizy.com/94155754378.pdfIn PDF document text
    • http://dowafirowelumex.atwebpages.com/34184534910.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_off0000e60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60F 5100 bytes
SHA-256: 876cd3fe121155ae802a692472b6de2d2384368ab331a39ae800a2420ed12626
font_01_sfnt_off0000f782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF782 12604 bytes
SHA-256: e95da0f538951fae5a627425be3caf26d79a143db694a6763dd94c5feeb67b90

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