Malicious PDF — malware analysis report

Static analysis result for SHA-256 7019b350615ea8b6…

MALICIOUS

PDF

205.8 KB Created: 2021-05-17 04:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: c7bdb8b118f81bd66d35ec3b5accee07 SHA-1: 6a63f2aced0386c194a89c7d3effbecc5c7f9cdc SHA-256: 7019b350615ea8b62f4d4db7bfb6ce27784dc1e15ea88d094547d3a057ad5839
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/strik?utm_term=will+indigenous+cultures+survive'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9896

Heuristics 4

  • 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.
  • 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/strik?utm_term=will+indigenous+cultures+survive In PDF document text
    • http://bixekakazozerol.mywebcommunity.org/wumogokobaseg.pdfIn PDF document text
    • http://zoomita.fun/resumen_rimas_y_leyendas_de_becquer_rincon_del_vago2kam3.pdfIn PDF document text
    • http://gabutetidik.22web.org/heart_beats_kannada_movie_all_songs.pdfIn PDF document text
    • http://repair-telefonov.ru/luvusinawqr84.pdfIn PDF document text
    • http://itayoga.space/fifa_world_cup_2018_theme_song_download_mp3_320kbps0zyiy.pdfIn PDF document text
    • http://sozadulowen.22web.org/machine_learning_models.pdfIn PDF document text
    • http://neridofufuleteg.scienceontheweb.net/77344309573.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/what_are_the_classroom_implications_of_classical_conditioningafbjx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guseboses.atwebpages.com/a_horse_and_two_goats_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8ae8e2e-507e-4b5f-a3bf-0e14e0cd5fcf/guzimamizowoge.pdfIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_359f654563354f9190322088eb5297b6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/laginekux/muxedaxatalozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d67951a-c0d6-4fad-9ee8-d332c42c4ac5/39044425048.pdfIn PDF document text
    • https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_aa36065569684fd6920d70a424bfcc6b.pdf?index=trueIn PDF document text
    • http://padegijogul.atwebpages.com/bronislaw_malinowski_argonauts_of_the_western_pacific.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2e98235-5e68-4214-9208-5e7c90651487/taxulumudabevizomiz.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/dijuvafagogobelus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce1e3a00-6b64-4cb5-974a-0308453ef3bf/2001_honda_accord_transmission_rebuild_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2488e30-463e-41c8-9a6b-29ac75afd2fa/masters_degree_public_administration_in_nyc.pdfIn PDF document text
    • http://pebotavafusu.epizy.com/86917023630.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/mcdonalds_application_form_questions_answers.pdfIn PDF document text
    • http://zesugipove.onlinewebshop.net/oil_gas_company_analysis.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_off0002d813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D813 4968 bytes
SHA-256: d144c6b7bebbd5c11de7d8641bdafee9ce0d9c75890db722adb0599298e9d9f2
font_01_sfnt_off0002e925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E925 23836 bytes
SHA-256: 1cc4d3a34048156678af2d46a1bbf70ff431d0481c41661ee7924945a6e4b0e1

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