Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1193c7bfba743d…

MALICIOUS

PDF

110.5 KB Created: 2020-11-11 12:58:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4f5b1b2a2d55c7869ce559defc54ec2a SHA-1: 2236ecb7f98629f1d1fc868602be2a6ddea781c6 SHA-256: dd1193c7bfba743d6ff4e3f4765990f3298143d89ee56a9e09f98bdf796111f0
214 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 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 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
  • 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://traffmen.ru/123?keyword=marvel+future+fight+uniform+guide In PDF document text
    • https://rirubonoji.weebly.com/uploads/1/3/4/5/134528367/negisiruva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376599/normal_5f8a5506f0499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391623/normal_5f8e746f04964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425910/normal_5fa1051f024f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f9887952fd8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413375/normal_5faa2bad9be7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403129/normal_5f98265289f8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5fa141f78c965.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/fosalizuzu/sly_cooper_clockwerk_theme.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/google_drive_login_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/nmsqt_2020_cutoff.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/12843362886.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/57647066973.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/birds_name_list_in_hindi.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_off00017572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17572 5208 bytes
SHA-256: 5c4d9aecb3bd96529870f7dab5cb93e3ff4f66018a2a5e2f8b63db72f7c74f2f
font_01_sfnt_off0001870d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1870D 11156 bytes
SHA-256: 7b048aad4b05754410048c9ac5bd8c37101790a2917d51da257309d243afe91e

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