Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd674e88493d1032…

MALICIOUS

PDF

73.7 KB Created: 2021-01-10 09:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: efcf2a0844214f781c4e590f24597694 SHA-1: 9923df3ac1bd3114d8569963d02ba1ac69c1f727 SHA-256: cd674e88493d103217fd7771f022ec7918f32e5aa8a7a7ec41c351ac575d0fb8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with several pointing to disposable hosting and link farms, suggesting a phishing or malware distribution scheme. The presence of these links strongly indicates an attempt to redirect users to potentially harmful external sites.

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?utm_term=seattle+swedish+community+scholarship PDF link annotation
    • https://cdn.sqhk.co/pigalixow/15bjeib/falling_in_reverse_lyrics_drugs.pdfIn PDF document text
    • https://kexawugidatenak.weebly.com/uploads/1/3/4/3/134338825/wotiledenora.pdfIn PDF document text
    • https://fubuzupa.weebly.com/uploads/1/3/5/3/135324320/7754307.pdfIn PDF document text
    • https://kagizorofom.weebly.com/uploads/1/3/4/4/134476017/7660138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_5fe8a8d47a77f.pdfIn PDF document text
    • https://lazaxakekobopox.weebly.com/uploads/1/3/4/8/134878873/nuwazer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471683/normal_5ffaa51b18d24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455881/normal_5fe0b7fb7e7ec.pdfIn PDF document text
    • https://site-1167964.mozfiles.com/files/1167964/66894020637.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/rimejiguvif/70514322956.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/debabogom.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_off0000e2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E0 5608 bytes
SHA-256: a60f6b42b3437d36f093344884fa1d629b03a8bb308dc61cbe544ea8df8a6feb
font_01_sfnt_off0000f5e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E6 10828 bytes
SHA-256: f070e305c23a70ae22adf2e4c0da0011bc2d7dc601618969871cb2ac6f120ca3

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