Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f08906f98065196…

MALICIOUS

PDF

68.4 KB Created: 2020-11-03 04:08:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f45d3b5de6e6641255eb6dd3ada15d85 SHA-1: 2c41526544c59e70daab09b7da03678bb4ad7a1a SHA-256: 1f08906f98065196b00d7c5c8d10a402295a57fd140f401a7b6e958d6999b998
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?keyword=wills+eye+manual+2018 In PDF document text
    • https://weduxuvup.weebly.com/uploads/1/3/4/3/134308116/pijaveb-mipogojo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_5f8fb269bfa7b.pdfIn PDF document text
    • https://bonujuvab.weebly.com/uploads/1/3/2/7/132740321/tupirinaxezu_jekobul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379603/normal_5f97a6cbc76d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403539/normal_5f94ae6e48fad.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/8283320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369640/normal_5f88d4a42c2f0.pdfIn PDF document text
    • https://taruzabob.weebly.com/uploads/1/3/4/4/134493447/61364bedfb01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5f946fb31373f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/094cf8a7-b232-41c3-8117-53db98a1394f/riwudajub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3531/9208/files/a_practical_handbook_for_the_actor.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/44646579397.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000befa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEFA 5064 bytes
SHA-256: b90dcb4d3b9c8c2d53d8d1cbf32db262c3e895d31dc0e5f9f4a1f251fffcf2ba
font_01_sfnt_off0000d016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD016 11624 bytes
SHA-256: 7e9260621f022924cc9d8fc58bde851b953826ae87f6f639aab5d769c05c2ebf
font_02_sfnt_off0000f6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B3 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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