Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddb59b137ad33311…

MALICIOUS

PDF

84.1 KB Created: 2021-05-25 00:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 98fddbf60dbc0eed765ec0a2caef5d48 SHA-1: 4a2e7b299fcc4a16a21100dfec1c87eb703d302e SHA-256: ddb59b137ad3331159e1cb69c5f81078e9d1f3d358c4a603a4beb1dc282c4580
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to the history of physics, likely to trick users into clicking a malicious link. The embedded URL points to a suspicious domain, and the ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the PDF structure and embedded URI heuristic suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://dugedepap.ru/strik?utm_term=antecedentes+historicos+de+la+fisica+en+mesopotamia PDF link annotation
    • 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://uploads.strikinglycdn.com/files/e4707cc1-5209-4147-b121-41d22e8cddfc/noxuguwasuxenitogidaruf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/415ce552-64c2-4daa-acaf-70f5d5361d79/do_swing_traders_beat_the_market.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b400ed4f-1142-4071-9bd4-82ba4994fb4e/how_to_know_if_your_husband_is_having_an_emotional_affair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/410bd9c7-b53b-4a7d-b0cc-a26519f1be5f/revisor_de_ortografa_y_gramtica_en_linea_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c51a5c86-e123-485d-8cf2-ef53243f787b/wolugakibutunazazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60639ab3-fe2f-4d81-95a2-b47b4b1572c8/zuxawovebezidupeker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0afb4a5-306e-4130-b5ef-5778a875d922/nimusexigeturoxax.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/lukaxudosowadizup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e0049ba-20fd-4b3c-a42e-8f5f19290777/how_to_find_initial_velocity_without_time_and_final_velocity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6ff0c3a-db65-4a45-b1b8-4c371138a40e/vinerogixavedaletuxojovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84935eb1-cec9-429b-94cb-5c5d19a53b78/kiraxulenefegoveb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c8ab37d-6f97-4fb6-b9f1-6257566c233a/17909522256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49eaa3dd-95f7-4ffb-8800-d542783ba630/emil_and_the_detectives_full_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/008c5f83-a17c-4b64-ba23-7cf6b7f31d64/jabenitoditevefixujenegub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09fdce2a-8b3e-4e5f-99e3-f7505ac851bf/how_to_calculate_wave_function_for_sp2_hybrid_orbitals.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/awesome_web_templates_github.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af417faa-d6a2-4e59-bda5-ca3e12beceed/h.264_dvr_firmware_v2.62.r07_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE524 5172 bytes
SHA-256: 3396ed40bda6169e7d8282127d8738c5cab141383bd993e5588ecb21e5c4c331
font_01_sfnt_off0000f67f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67F 12756 bytes
SHA-256: b124b6737de0f66f040897cecbecf0e079f6bdfacf8a6df6e58f5ac1c949fac1
font_02_sfnt_off00011ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CED 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_03_sfnt_off0001321d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1321D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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