Malicious PDF — malware analysis report

Static analysis result for SHA-256 884f83692b1ed538…

MALICIOUS

PDF

61.5 KB Created: 2020-11-24 03:23:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 284f258dc89e52b4ba862fb9b256e970 SHA-1: 15474ae7e614848050d1d1ce5f3361c85c24de59 SHA-256: 884f83692b1ed538101c933f59f8333e83e76a4042da31c20ba0f375ef5cf18e
222 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, 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 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/aws?utm_term=headway+elementary+workbook+pdf+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5f9aca6f72a91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448984/normal_5f9e4cf995f4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383792/normal_5fa3d9b1bd255.pdfIn PDF document text
    • https://fulugive.weebly.com/uploads/1/3/0/8/130874350/16b53740dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449399/normal_5fa1bc9b86c2b.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/wilajolobowefixinate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389793/normal_5fbb6ba3e5bff.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/e7a433bb9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f870351b8024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5f9fbd67e7fb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_5faadb38e62c0.pdfIn PDF document text
    • https://gimelukisisira.weebly.com/uploads/1/3/4/0/134040832/joxevoxamebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f87020322abb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/bhojpuri_comedy_movie_480p.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_off0000b2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2BA 5368 bytes
SHA-256: 478c5efe04be14d87b42b5a8eb55458a504e457e3be48d9edd0c61371a654d43
font_01_sfnt_off0000c4f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F9 10728 bytes
SHA-256: 8057cce83f3a1b428195734d8937c790505551c5338b1365dadf958bd4cf9c76

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