Malicious PDF — malware analysis report

Static analysis result for SHA-256 644eb0c775e0e338…

MALICIOUS

PDF

67.8 KB Created: 2021-03-06 05:01:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d0c74945a4694257d1afe44d33e6868a SHA-1: 86ac378a65f63040b4c81601d34319ca75ff5dea SHA-256: 644eb0c775e0e3388391d3253f6301328146896cc92cca6b9bd22cc5d4563611
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pelibifir.ru/award?keyword=win+worley+prayers PDF link annotation
    • https://dapavivilo.weebly.com/uploads/1/3/4/8/134895477/gitaxofafi.pdfIn PDF document text
    • http://lomuwugevona.getenjoyment.net/pepaxaxof.pdfIn PDF document text
    • http://xonigej.mypressonline.com/81708094145.pdfIn PDF document text
    • http://tibudirowe.mygamesonline.org/one_punch_man_fanfiction_garou_meets_saitama.pdfIn PDF document text
    • https://sobiwololisa.weebly.com/uploads/1/3/0/9/130969717/favekivezawirawudov.pdfIn PDF document text
    • http://wubopabezijoso.22web.org/1851638265.pdfIn PDF document text
    • http://leporabev.mywebcommunity.org/what_happens_to_the_narrator_in_the_fall_of_the_house_of_usher.pdfIn PDF document text
    • https://vejewumuwuwaja.weebly.com/uploads/1/3/4/7/134759129/galupa.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/med_el_sonnet_2_eas.pdfIn PDF document text
    • http://gifagudilul.mypressonline.com/zefifazekobogonotikalo.pdfIn PDF document text
    • https://wisiwojapano.weebly.com/uploads/1/3/4/8/134896472/topurepud-xakofilopuzasu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e40da922-b0e4-44be-9878-2d4898ccab21.filesusr.com/ugd/3a38e0_b3f0bff3e9c64f70beced94eb05a88bd.pdf?index=trueIn PDF document text
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_844aec64b6714f96b18f9c8c3145af33.pdf?index=trueIn PDF document text
    • http://renepipelusibav.rf.gd/axis_camera_management_software_manual.pdfIn PDF document text
    • https://01477de9-116b-42a6-a62c-54244336611e.filesusr.com/ugd/dea9e9_25292028926042ab82bcb70babd4b5d7.pdf?index=trueIn PDF document text
    • https://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_01696e057cbc4a2bb301d9754f233833.pdf?index=trueIn PDF document text
    • http://lesunew.epizy.com/own_the_day_own_your_life_review_reddit.pdfIn PDF document text
    • https://e46eb8ae-11b5-47af-91b5-79e2db369635.filesusr.com/ugd/f84671_1e7e43c2280143138851984f84e7a5e4.pdf?index=trueIn PDF document text
    • https://6bc553e5-d0de-4278-827a-c77c8eb32fbd.filesusr.com/ugd/4a6c57_cb2431c132484a618ecf523580d99a48.pdf?index=trueIn PDF document text
    • http://wafowudu.epizy.com/how_to_bluetooth_a_zagg_keyboard_to_ipad.pdfIn PDF document text
    • http://fubavinexazixo.onlinewebshop.net/4th_grade_math_games_jeopardy.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_off0000cd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8B 5020 bytes
SHA-256: 38e0757fd005d007aef053aac75b8fbdfba2e796667ae5dea7117c1ebace8492
font_01_sfnt_off0000dec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC7 10352 bytes
SHA-256: 3a8da277e20967c01a399424e58ee6e34d474d2641e73ea7427c2a74bd346553