Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4471ed17d28fbab…

MALICIOUS

PDF

47.3 KB Created: 2020-11-06 15:24:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: bc84405377bf7e002006871ff005e290 SHA-1: 0508e7eb3f7c07262b444b5c4e8c8534885d02b9 SHA-256: d4471ed17d28fbabc688ce166235247c49b205f77c8be3a12a81b557835dcc6b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://traffking.ru/123?keyword=spectrum+tv+listings+tampa+fl In PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/9be49eb89d1b10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vajefam/philips_respironics_remstar_auto_a_flex_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/99739296831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c971d613-09fd-4874-91f6-37c4803354d3/fofirevi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a92ec1df-73b1-47fc-bc84-a6bfb02b272a/sujiponilupawojosukapul.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/sogij.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/exe_to_apk_converter_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/disney_songs_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/nueva_ecija_philippines_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07d6ece5-ea80-444e-993c-4a3391761705/keeshond_samoyed_mix.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/magnificent_mind_at_any_age.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2f4b679-3109-47a7-8018-3f3a0a78a066/43366093304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c94499ad-2bb9-4b5d-af6f-d7aebe3f4076/54400087222.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8E 5272 bytes
SHA-256: 554d5d0c6d1d1fa5e7611273763aeafdbde89acb37d57279802be0b2f60db14f
font_01_sfnt_off00007e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E66 10548 bytes
SHA-256: 07067c5d4858f7afd4a5607a390ee034bcecefa3917147879bc51984d36fc5a6
font_02_sfnt_off0000a22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA22B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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