Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f354b9676ade197…

MALICIOUS

PDF

113.2 KB Created: 2020-10-30 15:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9f4c4208f3e52ff1e8fb0875ffe82440 SHA-1: 2379155a61862a7b1c2cff3788ed0fb95b0f88d5 SHA-256: 2f354b9676ade197e622e09ad7760a871ce17a3d9c5216edf59beb4210cf93a4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

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://ggtraff.ru/aws?keyword=modern+day+midsummer+night%2527s+dream In PDF document text
    • https://tanutefezuje.weebly.com/uploads/1/3/4/4/134437554/bukajijofapegul.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/430a575d-a77c-402f-9a2e-897538aaf98f/39295467347.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/beck_depression_questionnaire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a31e00-231e-42c8-b5a0-3941d9cba944/jufise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbe70a28-854e-46d7-abe1-ed361940f682/suwiz.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/bowufura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16ce30ee-c9fc-4255-bb7e-8b919ad16a13/puweb.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/list_of_danganronpa_games_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/27745785519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2054bdc1-2279-41a3-b3ec-5dcdc3f8992b/gazonoxuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d9e8f8-6f94-46a5-9498-aebf86d98376/kafimosi.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000165a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x165A6 5348 bytes
SHA-256: 84dd1f56d3aaee60fa54b4a8379a03123674b56bf102f653c25eeab947e2fe6c
font_01_sfnt_off000177c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177C5 13820 bytes
SHA-256: dbd0602ee3374891cefb1d896678d4644a3b1c34180ec4d4aefdb5d03efcb226
font_02_sfnt_off0001a222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A222 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

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