Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdc9df3c78045c8f…

MALICIOUS

PDF

59.3 KB Created: 2020-11-03 02:12:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3abad480c0a5641b587ac231e0c98dec SHA-1: 3196ef42853bab046d08497e2b9b9ea5de512e1f SHA-256: bdc9df3c78045c8f1b8a6bf4ee97ab1a3a33d19fde73efb46b69a0b417b04c77
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, indicating an attempt to lead users to harmful content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of the URL 'https://ttraff.ru/pify?keyword=a+lesson+before+dying+pdf+weebly' strongly suggest this malicious intent. While no scripts were explicitly extracted, the nature of the embedded links and the ML classification point towards a malicious document designed for redirection.

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://ttraff.ru/pify?keyword=a+lesson+before+dying+pdf+weebly In 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/97e4638b-56f0-4e5a-b8e6-a6d347615e0e/35808410800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8588/0214/files/persona_3_elizabeth_requests_beetle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1727/1453/files/stardew_valley_full_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c306390d-102e-4407-a8d3-bd6260b98dc5/69644164426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f74829-a468-44ff-8895-2808ea0d92d3/13041806228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f2a1ea-e3b8-47bf-84ab-4c852f94fda6/cathay_pacific_darbinieku_ceoanas.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/54987584825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf5e7196-cf8b-4595-86d6-c0b0732e6660/watch_four_christmases_online_free_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0245/4428/files/5417583406.pdfIn PDF document text
    • https://s3.amazonaws.com/zokokamu/animated_player_mod_1.16.2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2568/4420/files/25426711152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d02f1d0e-b940-45bb-b1ad-2094afc85828/42061648023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4016/5024/files/galoli.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6B 5324 bytes
SHA-256: b3dfa7c3281ef5f0d3638075ffe963cedde237a37a33eb33fa74811faf738f6a
font_01_sfnt_off0000b0a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A5 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0000bc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC09 10436 bytes
SHA-256: e40232cd3729006512ba85db7e45ae9af27dee47ea8100311ac5ffa9cd068785

Open this report in the interactive analyzer, or submit your own file for analysis.