Malicious PDF — malware analysis report

Static analysis result for SHA-256 625c5d9100b6ac5d…

MALICIOUS

PDF

67.8 KB Created: 2021-02-25 03:03:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c09e01e59ae37c1382259fdc3b193e95 SHA-1: cc285e547a40ed8bfa7b10dc987e4991d9f99bba SHA-256: 625c5d9100b6ac5df6c0a55e96637099d17e8738fb67bf14d1aee4efd2d53605
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=sunbeam+heated+throw+controller+flashing In PDF document text
    • https://cdn-cms.f-static.net/uploads/4497395/normal_6025a2e0bf7f1.pdfIn PDF document text
    • http://teleporttur.ru/loseselerekugemida0sxwf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459025/normal_600ee6fe07a58.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/tokinegiranazik_xotoradesiwejow_jaxesuzi.pdfIn PDF document text
    • http://steelsho3.club/as_a_man_thinketh_book_review_quoraj7tmt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_60241c4937267.pdfIn PDF document text
    • https://lefokanu.weebly.com/uploads/1/3/4/3/134377273/losemesisivezori.pdfIn PDF document text
    • http://boviriso.22web.org/bejidedemijujojixajukaj.pdfIn PDF document text
    • http://copyrightproblem.com/banting_7_day_meal_planqa815.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421061/normal_5ffb1875a5d5e.pdfIn PDF document text
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/3044017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455375/normal_5fd5fe8044996.pdfIn PDF document text
    • https://mutuvedaluvop.weebly.com/uploads/1/3/1/8/131856278/4627286.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuzadakeju.epizy.com/34658435437.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/audio_technica_lp120_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/59568415558.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/63818487814.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/sunoliditefa.pdfIn PDF document text
    • http://pavefobigemaxe.rf.gd/books_to_read_online_free_without_ing.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_off0000cbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD8 5772 bytes
SHA-256: 3c329b9dc54d8283fa3c0b349a33f41febb08b8c0ef4aea38e40eb975447b74e
font_01_sfnt_off0000df5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5F 10024 bytes
SHA-256: fb5cad4275b4aa8c32de95b974669513c7eccb1f42e2f95cb3c5802be9e3840c

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