Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9a3462b59ca2ce…

MALICIOUS

PDF

56.4 KB Created: 2020-10-08 06:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b9b412918676f8ec68ddbdb321b7dd61 SHA-1: 7f741746f943b51960d83f53120c6db1a07bc9f6 SHA-256: 3d9a3462b59ca2cec269a6822414564b835b32abcd5dff15fe161f40d50b2498
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://cctraff.ru/pify?keyword=marie+de+france+fables In PDF document text
    • http://sujiwova.thisdesperatecity.com/uploads/1/3/0/9/130969284/3509845.pdfIn PDF document text
    • http://files.ancientcraftstudio.com/uploads/1/3/1/6/131607374/f068e9693c6.pdfIn PDF document text
    • http://files.tidygardensfencing.com/uploads/1/3/1/4/131453099/nubumafes.pdfIn PDF document text
    • http://files.faliselogisticstravel.com/uploads/1/3/0/9/130969148/2989587.pdfIn PDF document text
    • https://site-1048448.mozfiles.com/files/1048448/fuwuvuvopo.pdfIn PDF document text
    • https://site-1048535.mozfiles.com/files/1048535/59763486300.pdfIn PDF document text
    • https://site-1039355.mozfiles.com/files/1039355/65737200400.pdfIn PDF document text
    • https://site-1037088.mozfiles.com/files/1037088/sijuvofemalite.pdfIn PDF document text
    • https://site-1038349.mozfiles.com/files/1038349/36427056618.pdfIn PDF document text
    • https://site-1039676.mozfiles.com/files/1039676/67666082091.pdfIn PDF document text
    • https://site-1037844.mozfiles.com/files/1037844/71191639342.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/db312ea7-06b5-4bba-b551-34594c58ed18/bevulipepubuziwiwobug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/708c9850-244c-4077-92d6-e4f009020734/44492630329.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d0463b-99c7-4f5a-8fc1-1b4853d6a303/3818336394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa19f0c5-9d20-448f-a1e4-ef64bb33813d/sujuwiwarugurulujo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99F2 5160 bytes
SHA-256: 72b8d9f7248c8a68f45a5538d27ab3936569c15ecffead15486b83e4ef6c59c5
font_01_sfnt_off0000ab9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB9A 12824 bytes
SHA-256: 2a72a6f5ef532d8a05a2dd81b893a5e736ff274d76b2d58bdab7b29823e94fa7

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