Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c22d9428cf3418…

MALICIOUS

PDF

90.0 KB Created: 2021-03-19 23:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 31ba21b72fff49d756e6f6eed3f8d39a SHA-1: b291deda27104b2771f1adff6df265eba9d05006 SHA-256: e1c22d9428cf341840c71f5026696d83369cbe60a5f84578f02730aab09c48ad
136 Risk Score

Malware Insights

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

The PDF file contains a high-confidence heuristic indicating it is a phishing lure, specifically designed to trick users into downloading an application. The embedded URL, 'https://jottigo.ru/wix?keyword=photomath+apk+ios', is presented as a download link. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest potential for embedded JavaScript or other exploit mechanisms common in malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=photomath+apk+ios PDF link annotation
    • http://rabifew.iblogger.org/fdny_forcible_entry.pdfIn PDF document text
    • http://verification-help.com/21456607972g8uib.pdfIn PDF document text
    • http://dokakepitizix.medianewsonline.com/95373350421.pdfIn PDF document text
    • http://jaxaxanukijomel.22web.org/listen_bollywood_music_online_free_without_ing.pdfIn PDF document text
    • http://jidogirikar.mygamesonline.org/dreams_by_langston_hughes_imagery.pdfIn PDF document text
    • http://pihodze.com/wazusoinmol.pdfIn PDF document text
    • http://skywonder.space/bangali_babu_english_mem_bangla_movie711eb.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/timituvupame/tudegusonex.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/vuwepivifofewuf.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/57391304793.pdfIn PDF document text
    • http://velirogajebabe.epizy.com/13846065598.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/printable_inservice_sign_in_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/simulacro_de_evacuacin_en_centros_escolares.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/hooda_escape_spooky_farm_answers.pdfIn PDF document text
    • http://ritumogadoj.onlinewebshop.net/mexico_customs_declaration_form.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/17163607255.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/domestic_animals_name_list.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/pathophysiology_of_stroke.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/81239460705.pdfIn PDF document text
    • http://sizemogigu.myartsonline.com/mitosis_vs_meiosis_chart.pdfIn PDF document text
    • http://jasesazolaf.myartsonline.com/thermo_king_error_code_89.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/laser_cut_templates_christmas.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/information_about_all_planets.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/free_responsive_html5_templates_2018.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4E 4560 bytes
SHA-256: 4ca58522bc82954eb54c1f54c17af2008a27eb158051f594eae553c5316ee8d7
font_01_sfnt_off00011abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ABD 21852 bytes
SHA-256: 918bfa14cd86f02e4c4daffe311dcdfe34a4b3511461324ae6c45b4d9647ab56
font_02_sfnt_off00014c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C2E 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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