Malicious PDF — malware analysis report

Static analysis result for SHA-256 4080971206b800fd…

MALICIOUS

PDF

70.4 KB Created: 2020-12-13 13:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d6d168c9f8f79b36dd5ffb9b5f809e2b SHA-1: ddce2a172fbb2fd4fbbf7ae346c669bbaf0328eb SHA-256: 4080971206b800fdf0529d0b42886e0a5dc9a99fe5224be139e5ff700b7aa987
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?utm_term=yankee+stadium+seating+guide PDF link annotation
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/1512088.pdfIn PDF document text
    • https://ligexomapaku.weebly.com/uploads/1/3/4/3/134321337/temoka_favafof_mulosexegos_samukewi.pdfIn PDF document text
    • https://fikosaxan.weebly.com/uploads/1/3/4/7/134753192/9923275.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf52233485235c86bd1a08/1606373929160/rovolonuzisobalabumaf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed17f7cf8c75402b0ccf/t/5fd1ffbef2ee360040fe0364/1607598015603/my_movies_dvd_collection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c49287f9-d562-44e8-9c8b-bb270bd802a3/wosafometit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a31ccbdd-6b0e-4341-8376-ad39619ec6b9/29448242537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cc05488-98d5-45ca-bf44-9118f2800e2d/vuririlaraboturojalag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33531574-ce3d-4387-a953-cd3be5bbb7fa/leguvalejinagopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb373090-fb6c-4f95-a053-d2ad6a12f2f8/4918999253.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/best_caller_name_speaker_app_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e63479-8b21-4f8c-aa3f-bc9d2b6ce0a1/loxavoloxebuperiwe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc002e7e5c7695ca996b6a8/t/5fc0d900e6d49a06bbb1dcec/1606473985032/watch_alita_battle_angel_anime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1421d0-1d16-4c33-a6e4-5aa3d2c5f5c5/le_mariage_de_figaro_analyse.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/photosynthesis_virtual_lab_answer_key_northern_highlands.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_off0000d725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD725 5044 bytes
SHA-256: 055d3bccc81f37931de407b2272093cb8266cc4b0a5bbc64e667c8b827e649a2
font_01_sfnt_off0000e844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE844 10828 bytes
SHA-256: e2255087f42fd48c7139a98b8ef2bad9ea4ad4989c4bf49134c1b64f28e44d0f

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