Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7bd510017f4d33…

MALICIOUS

PDF

40.1 KB Created: 2020-10-05 17:50:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ca8f37f78e8c70787a975411828509e8 SHA-1: 4ea33a99537800dc11eab667e0ebb4d72e83fda2 SHA-256: ed7bd510017f4d334d4073f1b38427e7a073cadf2a018545a5ac978a416937a3
124 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.
  • 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://gettraff.ru/strik?keyword=nxp+imx8qxp+datasheet In PDF document text
    • https://site-1042633.mozfiles.com/files/1042633/93689065583.pdfIn PDF document text
    • https://site-1042548.mozfiles.com/files/1042548/tunisurojog.pdfIn PDF document text
    • https://site-1041679.mozfiles.com/files/1041679/55738588498.pdfIn PDF document text
    • https://site-1042869.mozfiles.com/files/1042869/5514159637.pdfIn PDF document text
    • http://files.stonyhilldental.com/uploads/1/3/0/8/130813769/da1ed5a7887e5.pdfIn PDF document text
    • http://nadajek.vealsphotography.com/uploads/1/3/1/4/131438438/xazadoninetiziw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3359/0940/files/28225689624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/7483/2534/files/milton_kickin_it.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3160/0538/files/radio_disney_bolivia_top_30.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0119/9777/files/algebra_nation_practice_book_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6486/4167/files/mcdonalds_side_salad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/487bde52-99df-4e58-9175-8242ad02219d/77963830211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d61bbbe-2896-43f5-883b-4bde3d743c94/84757630376.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_off00004f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F53 5428 bytes
SHA-256: 69e144598d07e8dbe77505a5de865fa70310c6ffd8fbd78dda70921a6987a06b
font_01_sfnt_off000061ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AC 15680 bytes
SHA-256: 83e9c59bab9bb44f997f9270c969c2186bb8b16d4532b83cfa252f0e21dc7d8d

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