Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0364238703f747c…

MALICIOUS

PDF

109.5 KB Created: 2021-03-12 22:04:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 09e864ca20df2d6e2662839d3b92fbd2 SHA-1: dac998b53edc520ea034581b9e173b9583323878 SHA-256: f0364238703f747ccdd6b843a83ff9433f8b32c290f47a55f4e1a35426b59e84
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting it is part of a link farm designed to distribute malware or phish for information. The primary malicious URL identified is https://midufefew.ru/wix?keyword=the+red+queen%2527s+race+asimov+pdf, which likely serves as a redirector to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/wix?keyword=the+red+queen%2527s+race+asimov+pdf PDF link annotation
    • https://cdn.sqhk.co/wovenebi/pggTPQ6/lupomivavalunofikumabet.pdfIn PDF document text
    • https://runuxufugax.weebly.com/uploads/1/3/0/9/130969308/1349345.pdfIn PDF document text
    • https://nogigeto.weebly.com/uploads/1/3/4/6/134665346/zupasoxekome.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/gjaZMYu/46775892785.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/hajckhh/6176424023.pdfIn PDF document text
    • http://pejazadajenatew.getenjoyment.net/the_ethnic_cleansing_of_palestine.pdfIn PDF document text
    • http://sepukolobu.sportsontheweb.net/99995904035.pdfIn PDF document text
    • https://cdn.sqhk.co/felatadag/CTEhcii/kogijujan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e652137-10a4-4a52-90a3-c9dbd40b5a34/wazirelopezetuxelaliw.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/free_online_scrabble_against_computer_no.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/tuwar.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/the_norton_anthology_of_english_literature_9th_edition_volume_d_e_f.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/bteup_result_2017-_18_marksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18369e5b-654c-4233-a373-3023d575635a/monot.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/yamaha_rx-v377_speaker_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/75448137280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b863492-66fb-4754-8ebb-87e2834d7012/whats_the_earliest_pregnancy_test_you_can_get.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/xefirajoj.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/modunawosaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/74174219879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc45bfb-8e75-480a-988c-287dd351f2a0/tarulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a5d4fdb-e182-4d13-a6f8-6d817d611e77/evenflo_triumph_lx_convertible_2-in-1_car_seat_-_charleston.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C3C 5532 bytes
SHA-256: 499b04ddc27a5bcd8a013f9ae5dd8479a78f8a2dac1bdc7fcab7f41b9c880f62
font_01_sfnt_off00016eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EEC 10404 bytes
SHA-256: b4ed8dc50f64896701caf85d6fef7a40b979e465415258419384d381eef1e00a
font_02_sfnt_off000192d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x192D4 16112 bytes
SHA-256: e9f71365a2a9ea4b152c2f6701d7ccf33f67bf216d443f7f7b47b7c3311bc682

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