Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa23467ceffb3071…

MALICIOUS

PDF

59.6 KB Created: 2020-12-24 02:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f86a08f134eea687313bf95d3fd9f19c SHA-1: 794ea2da6875dbc2b241694bbc02e159f9fc961a SHA-256: aa23467ceffb307146ba88466b0fa690ec2f566a23ceb8d1ac3c937106e2b4d9
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, and detected by ClamAV as Pdf.Phishing.Trojan. The document contains a large number of external links, suggesting a link farm or phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate it is designed to redirect users to external, potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://trafftec.ru/aws?utm_term=boss+telugu+songs+free++doregama PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457330/normal_5fb9b71dc1da1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392652/normal_5fb46e5ca9927.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366982/normal_5fdfdff1ccd05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420239/normal_5fcd68364e6bd.pdfIn PDF document text
    • https://wekexodaxax.weebly.com/uploads/1/3/4/7/134713384/vaguvisipaxado-wukunazenu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490123/normal_5fc309d68c0b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_5fa5148481da7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491933/normal_5fdc1497b8700.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f42aa81b-fbb5-4a4b-abd8-37fe160b0c8e/56945124919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/406306a3-8599-4ebb-b368-009bc2ec12f9/my_movie_5_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/bholenath_dj_remix_song_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f3badb-2a52-4504-9be4-863f19e96e0d/usmle_step_3_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71757adb-1ea7-432b-871e-1ca856977cf9/tekevonobukipip.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/10496068411.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/3d_goggles_for_pc.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_off0000ada8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA8 5276 bytes
SHA-256: 87507122a9e65b4b87faec675d6fadc73d8b3cddd20c1487568840697907880e
font_01_sfnt_off0000bf86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF86 10096 bytes
SHA-256: a8b7dec639d952452974c3488fdb915d0748ff61c584d92c9f5f48c01b3918a0

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