Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e7d8b6a6224ae6…

MALICIOUS

PDF

40.0 KB Created: 2020-10-31 17:43:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 347239b4b60d9e8caa9820e5054efbb6 SHA-1: 967db9bb2507399d337ba93a87b4da6cd740e686 SHA-256: 69e7d8b6a6224ae6bea5474e69c2e9da93f5be90c9062851343e1c6bc0f136d5
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirectors or link farms. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the presence of numerous external links suggests an attempt to redirect users to malicious sites, potentially for phishing or malware distribution.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cctraff.ru/123?keyword=vodka+on+the+rocks+with+lemon In PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/zinili.pdfIn PDF document text
    • https://moxipilewuzeget.weebly.com/uploads/1/3/4/3/134360433/894cb6e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c94415-e058-47ec-8918-8e65d944e40a/derived_demand_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7b36f92-ca44-455a-9638-5cb6298f458d/pasogorevifusajubewatob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/470f9be7-1ed6-48b0-8e23-982de6b7ca46/48047877921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec663cce-63dc-4c5f-ad9b-6d5be836e879/diralosok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88d2ceb1-c17d-4bde-b6f9-812506ab47ca/77726759898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/9065/4397/files/45393546167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee52dfd7-074a-4450-ac95-19498b8d9f9b/46447764001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aa72310-284f-452d-ba99-96ad2d439ddf/zajogejulenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5d17651-c24a-4774-ae8c-3790c9985ed9/pokosolofofezetasuruzise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7dd96ba-92b2-4bee-b1e9-23404b0c855b/47299984659.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_off00005d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1D 5300 bytes
SHA-256: 42199a90767370f3e113c059e42dd9c0ff60094791fc7778a893c58d74703445
font_01_sfnt_off00006f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0F 10576 bytes
SHA-256: 88ce1a320975b9d5690af47ca894481c56bb908a5db0e294622708bd4cdb30c7

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