Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b47b6d5301b677c…

MALICIOUS

PDF

45.4 KB Created: 2020-10-27 18:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 070aab7127ba0744b8c5225ae63a7bb3 SHA-1: 84885c33dc02dad24ed2a875b8a060dafec627ae SHA-256: 8b47b6d5301b677ca445f526197b0ff60964b75aaa4d4045b92e30e7defb49a6
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL, https://ggtraff.ru/123?keyword=jillian+michaels+banish+fat+boost+metabolism+video, is the primary indicator of malicious intent, likely serving as a lure for further malicious activity. Although no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/123?keyword=jillian+michaels+banish+fat+boost+metabolism+video In 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/9170f7b3-2544-4c6c-9a65-4b9ba0e42954/daworunulukuderegemune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79a245c3-6210-4432-a2d5-6b83d40af5f5/demeruxesepos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c0c2d2c-17e9-41fb-abd3-da7a23f6b348/sepulivuxuvesitovefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40a89676-726b-4bbe-86ed-27af93ec94bf/bezeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cbd6d65-00f6-42dc-b28e-a201769a8224/larunipibekonudapujole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b986b622-8465-4abf-b017-a2afb0335e4f/17568046347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0140f6d4-f214-4206-acf5-a0430f24a259/pujupopifizewidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6957/7637/files/zanijutuwumokomonopozezas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5509/4689/files/mini_mental_state_examination_ireland.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3496/8742/files/laporan_praktikum_spektrofotometri_uv-vis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0649/9226/files/91043738600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1752/5188/files/22833677161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3496/files/18593892286.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/python_machine_learning_book_by_sebastian_raschka_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/puzufepikovaxonoxopi.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/6151800304.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_off0000633a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633A 5144 bytes
SHA-256: 162d63b15ae449b38ebbb8ee59bd45f8560b18ec06f3ce62d1cc3f3594f453c7
font_01_sfnt_off00007483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7483 11024 bytes
SHA-256: f3d9cc6c7de70729109ff22ae88fd9d1c38ee32ef8eef2c945700fa772c12924
font_02_sfnt_off00009a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A1F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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