Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0c42bc6bf5f03f…

MALICIOUS

PDF

78.4 KB Created: 2021-01-04 23:23:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 66461f621d1b4c8e0571e4306cac2804 SHA-1: c286bc5e38862654bf8ec0d293c26071097ea5e9 SHA-256: 3d0c42bc6bf5f03f6252175961468e25f43cdbcab905e09fcfc429b39eebc045
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially harmful sites. The primary malicious URL identified is traffnew.ru, which is likely used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://traffnew.ru/123?utm_term=heaven+is+for+real+book+pdf+free+download PDF link annotation
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/lobalawejit.pdfIn PDF document text
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/1b1c7.pdfIn PDF document text
    • https://luxefelukij.weebly.com/uploads/1/3/0/7/130775337/2817890a2dc.pdfIn PDF document text
    • https://nemelodanunoju.weebly.com/uploads/1/3/0/8/130874480/6ae581.pdfIn PDF document text
    • https://rusapaja.weebly.com/uploads/1/3/4/6/134617617/3949493.pdfIn PDF document text
    • https://pizewenijanud.weebly.com/uploads/1/3/0/7/130775868/7142815.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495696/normal_5fec74164f21a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482403/normal_5fe6dd951c8de.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/61695b1b-5eb9-4de9-a907-74ae65fedb6b/26418306246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5fab2b-3f70-48b2-9628-b66682b6e3ac/factorial_de_un_nmero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c57c6d7-6f42-4982-9ae1-aecd6ab10cf8/69725152551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fbe5084-52d3-44bd-962a-f0411f149c04/6716231858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef663437-5911-4bd4-8533-192a861ddc90/53390837972.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ea775fc-5833-4207-b081-6833ff45ff8d/t_shirt_shontelle_meaning.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EB 5060 bytes
SHA-256: a42c71b9f368a79956bff1b17c19fb59e6f6ae09baedb565bd9e1dd62ad4b2d9
font_01_sfnt_off0000f82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82B 11284 bytes
SHA-256: 2ff8080e971154f59d6a8cd9adf93787374779a9f95fd24a88a512bbe2b36b97
font_02_sfnt_off00011e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E90 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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