Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d04458df78a7b40…

MALICIOUS

PDF

86.6 KB Created: 2021-04-01 14:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb925238d7b43d924544627cedbbaec2 SHA-1: d4d3c283a41165e6fedceea7602fd7a193003b74 SHA-256: 9d04458df78a7b408ffa609c9305b5488e03473f0f60d90be9bf5737c30e6879
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, 'ponafet.ru', which is likely used for phishing or to serve a malicious payload. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://ponafet.ru/strik?utm_term=love+story+movie+1970+hindi
    • https://cdn.sqhk.co/zoxogatuv/hd8jc2t/appellate_form_means.pdf
    • https://cdn-cms.f-static.net/uploads/4377114/normal_6034388fc1f6a.pdf
    • https://cdn.sqhk.co/murerezusa/gjdriel/12085838106.pdf
    • https://static.s123-cdn-static.com/uploads/4379377/normal_5feb96be86981.pdf
    • https://cdn-cms.f-static.net/uploads/4478928/normal_604972cd7a2ed.pdf
    • https://cdn-cms.f-static.net/uploads/4427538/normal_600c4a5fd360e.pdf
    • https://cdn.sqhk.co/jimavidozeze/gfOjeii/residence_inn_atlanta_airport.pdf
    • https://cdn.sqhk.co/bijukipuj/3JhbijF/50215268483.pdf
    • https://cdn.sqhk.co/dukoredod/igshbgf/mlg_frog_running_meme_sound_buttons.pdf
    • https://cdn-cms.f-static.net/uploads/4500417/normal_6054be8579d64.pdf
    • https://cdn.sqhk.co/dowotovewi/gjdjeFf/gataruborarakuvigo.pdf
    • https://cdn.sqhk.co/pofadugilip/fXXzjic/nbc_sports_tv_schedule_figure_skating.pdf
    • https://cdn.sqhk.co/pugudanirav/jaAQhyj/smart_and_final_near_me_hiring.pdf
    • https://cdn.sqhk.co/xafileme/gha4ihA/31115887672.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a577c651-6aed-4be7-84c6-10eec1563f8d/31505391675.pdf
    • https://uploads.strikinglycdn.com/files/ff09947d-1fc7-4c3d-83bc-013127c9b880/casio_illuminator_price_in_ghana.pdf
    • https://uploads.strikinglycdn.com/files/a10107fb-00eb-4b45-9524-72fc1a1d05f2/richmond_water_heater_element_menards.pdf
    • https://uploads.strikinglycdn.com/files/553bd22a-70be-4f92-bb36-3e598d91f583/dell_790_sff_i5-2400.pdf
    • https://s3.amazonaws.com/bezegoluzose/79101678847.pdf
    • https://uploads.strikinglycdn.com/files/eadc9c4f-d6a2-4015-9e60-6cf49ea0b299/history_of_modern_design_2nd_edition.pdf
    • https://uploads.strikinglycdn.com/files/cfad46fc-9c06-4f01-b656-f06974a73c3f/tokyo_ghoul_season_1_names.pdf
    • https://uploads.strikinglycdn.com/files/d2e5ad9c-74b7-4696-9c0e-22177d36bb44/logitech_x_540_specs.pdf
    • https://uploads.strikinglycdn.com/files/a081cd1d-d8ec-4611-91fa-3f2b3dc9aaba/zafixox.pdf
    • https://s3.amazonaws.com/wovigebi/nisogefififapameneludano.pdf
    • https://s3.amazonaws.com/tuxalowafokuvo/miduxobime.pdf
    • https://s3.amazonaws.com/poresi/sasoxedujivujesowa.pdf
    • https://s3.amazonaws.com/poguvelefa/sample_assessment_forms_for_preschoolers.pdf
    • https://uploads.strikinglycdn.com/files/07dd7948-282c-45e5-8759-ac12d9b02722/41801639222.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001134c.bin
33c1305fa8a09b77dff6886c76025485f9f74d88c536203468b4fc09f103b456		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1134C 5356 bytes
font_01_sfnt_off00012570.bin
2cde5088cfa1e0848c3ecd5bce4e5df55e2027eeb87f33a5dc670d7ce5794659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12570 11132 bytes

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