Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfaa0ec1104429ea…

MALICIOUS

PDF

72.8 KB Created: 2021-03-11 05:37:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 60804a9fad65bf474ebfe7ab242f9f02 SHA-1: 501af9e782b83894a3a2dc791916c8bb52149994 SHA-256: dfaa0ec1104429ea6b7b3f541c8a87a52c7a892ef9a5a02afd46e184cd5dcf84
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://mezovuduw.ru/wix?keyword=powerflex+40+manual+ethernet PDF link annotation
    • https://cdn.sqhk.co/wepunajexiju/WJosiiA/lilesa.pdfIn PDF document text
    • https://cdn.sqhk.co/jenojigise/gjTdBsr/bowmasters_game_free_download.pdfIn PDF document text
    • https://tipuzivi.weebly.com/uploads/1/3/0/9/130969377/fukapulubefokizozudu.pdfIn PDF document text
    • https://malitorenifavo.weebly.com/uploads/1/3/4/0/134017021/aa599906.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/Kcifje5/lorisidajovejexuwa.pdfIn PDF document text
    • https://fixexetakofipu.weebly.com/uploads/1/3/3/9/133997797/2590314.pdfIn PDF document text
    • https://cdn.sqhk.co/paxajirawegu/yK1ohc1/kovifib.pdfIn PDF document text
    • https://polerobozugewif.weebly.com/uploads/1/3/4/3/134344868/099c8d560.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/303aedd4-9c2e-4b45-91c2-b3536eb18da0/shadow_puppets_orson_scott_card_audiobook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e86c243-52d8-4af8-a2ae-f7fad6b26cb0/samsung_hw-f550_2.1-channel_310_watt_soundbar_2013_model.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e13b240-79b0-4e7c-890f-99e81b76a996/kukamerojoxav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfef935f-cce5-45d0-9adb-4e7e9a14df2a/96899683211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d756fa8-0e86-4a45-abe6-565c8aa1e06b/espiritu_de_dios_chords_and_lyrics_para_guitarra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c91e906-eb95-434b-9cb4-339fb5695932/suburban_rv_water_heater_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3d63452-7dcb-400c-995d-1c4e64149d76/69325098732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b6d936-f538-4f0c-b983-d56318d8cb7b/83493356611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c60c0a62-7b89-4c9c-b199-892f8a85ef0d/how_to_save_transparent_in_paint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e288dc3-4594-4203-b9c2-7a034ccb674e/80343936932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c290c2-b79b-441e-8530-3e004c0c7b0f/ruselidebagade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a39e2690-6d7c-4509-831b-0a3a6e49ebf3/gidakijugulidofisowosewi.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_off0000d772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD772 5220 bytes
SHA-256: edf5d872b55d156e537873540ae00715f251c01f0e40ad60813fa6ab973742b6
font_01_sfnt_off0000e91f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91F 15112 bytes
SHA-256: 3a9e15e0a0c334864038861e831e42d6c7282a4e56172e3183a9ce418b44eb21

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