Malicious PDF — malware analysis report

Static analysis result for SHA-256 84bf1dcfd9849b2d…

MALICIOUS

PDF

40.1 KB Created: 2020-11-02 06:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e3bbbe158058e009b9fb3222036bcfd1 SHA-1: 2662028b300944481f5ee6693ca71b4fe89ab2ed SHA-256: 84bf1dcfd9849b2da754d3768acec039e73687f10256144e685eb2dbf2e0a617
102 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.link/123?keyword=hello+moto+ringtone+accent'. The document body also contains this URL and a call-to-action phrase, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded link indicate a malicious workflow designed to lead the user to harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.link/123?keyword=hello+moto+ringtone+accent In PDF document text
    • https://kakakirikixego.weebly.com/uploads/1/3/4/3/134318951/rosetizixamesed.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/zexurif_fomipamuzuximix.pdfIn PDF document text
    • https://fijudemi.weebly.com/uploads/1/3/4/4/134400988/lokodamatusenaf.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/pawadugijoxexa_fomoj.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://uploads.strikinglycdn.com/files/3c9ba6f4-b7de-4403-ba52-0a74050ce415/pukek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5201/3985/files/bottom_navigation_view_android_for_multiple_activities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcf9b31f-8f73-46ce-a432-e76253ac29a5/motley_crue_the_dirt_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7493/7532/files/kud_mba_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/fijosalujuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1795/2189/files/youtube_downloader_converter_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2703/6322/files/ats_statement_guidelines_for_six-minute_walk_test.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/rukufotuwemifa.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_off000051bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51BF 4692 bytes
SHA-256: c8595b08484e59873070dc56d0c89fe4cf6836a9dad0c8cd09a684259991d401
font_01_sfnt_off00006185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6185 10648 bytes
SHA-256: 90718f093b49043c83543bb7e2ea5a6a0044931c112dc322b777713ac1945323
font_02_sfnt_off000085c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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