Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0979ce27987d4a2…

MALICIOUS

PDF

77.1 KB Created: 2021-03-18 01:11:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 3d10aa5e0deb92f0ddc3eedcd446d665 SHA-1: de846504d01b2120463300dd48507f4bc6ca5293 SHA-256: e0979ce27987d4a2d9e8720d61a7f5f17e99f9c979f86a7c7341337e809bd648
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The document contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=intermatic+eh40+manual In PDF document text
    • https://fiduvoxasugi.weebly.com/uploads/1/3/4/8/134856114/beberuzisisip-pabugigawe-zogojo.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/1ifhagc/wire_inductance_calculator_awg.pdfIn PDF document text
    • http://nibajafij.medianewsonline.com/brother_mfc-6490cw_driver.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/QIsjjfD/69493439799.pdfIn PDF document text
    • https://cdn.sqhk.co/kapopajij/MQ6idij/open_source_spreadsheet_software_for_mac.pdfIn PDF document text
    • https://toxoladosa.weebly.com/uploads/1/3/4/4/134479392/139c8c041be6.pdfIn PDF document text
    • https://rogapunuki.weebly.com/uploads/1/3/4/3/134375427/wefimojodovibinobos.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/PRhwOhi/chase_credit_card_application_review.pdfIn PDF document text
    • http://energierecrute-emplois.com/air_force_ice_hockey_scoregj8nd.pdfIn PDF document text
    • https://dijalotujut.weebly.com/uploads/1/3/4/7/134713382/riloxozujupomo.pdfIn PDF document text
    • http://madalez.22web.org/76333952628.pdfIn PDF document text
    • https://cdn.sqhk.co/gepumenujeme/eFhhhfx/mastercraft_x23_surf_review.pdfIn PDF document text
    • http://fesufobototezer.mywebcommunity.org/psychology_optional_test_series.pdfIn PDF document text
    • http://opendouche.xyz/1994_yamaha_timberwolf_250_manualoq3tn.pdfIn PDF document text
    • http://mojofaza.mypressonline.com/jagenubapi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://loxeputogojew.rf.gd/what_is_the_formula_for_power_factor.pdfIn PDF document text
    • http://fevifixe.epizy.com/nickel_based_alloys.pdfIn PDF document text
    • http://xumuturil.epizy.com/4172493324.pdfIn PDF document text
    • http://zijemuviwovo.rf.gd/verbe_etre_en_anglais_forme_negative_contract.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_off0000f17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17C 5028 bytes
SHA-256: 90245e4f38413ade5d42b16aec6d0445145e046d7ad69ce31401370b5ea837e8
font_01_sfnt_off00010264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10264 11012 bytes
SHA-256: 435244c3ffa49d5af318f9e3bf01fc700c080457458beafc89fa927e22bc958e

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