Malicious PDF — malware analysis report

Static analysis result for SHA-256 a869fcb0f0db1109…

MALICIOUS

PDF

67.6 KB Created: 2020-12-17 08:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: da032af95ad2b21ecdf4f24ba3b8592f SHA-1: e5c1564d8e08a76944576cc2b8fb320591629f19 SHA-256: a869fcb0f0db110921dd4a325cf502e13a4d43e75a82e0a2296c3ff102e4e876
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of numerous external PDF links suggest an attempt to lure users to malicious sites. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing trojan.

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://cctraff.ru/123?utm_term=brookstone+watch+winder+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4389604/normal_5fd9d1235a84d.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/76c30d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5fd68a07d2748.pdfIn PDF document text
    • https://fupopafesuz.weebly.com/uploads/1/3/4/4/134443157/124b0ffb03bd.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/sedimeraxufi/tagububekadinirabotilo.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/x_android_sdk_file_not_found.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/40978419747.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/text_emoji_art_copy_paste.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/zovapow.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/lidefekebodupudoligarol.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4992cb3e0f577145965b/1606371732902/how_to_cook_quail_eggs_sunny_side_up.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/32932676792.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/cisco_netacad_exam_answers.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_off0000c988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC988 5384 bytes
SHA-256: 802bbb6e1dce9916177f7b042fb77e01dfedc08fe4311b11ef8cac1edef74ab0
font_01_sfnt_off0000dbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBD 11076 bytes
SHA-256: 76b10596e950cc43dad8acde60efb3d5d665feaeba9bbce099abf7fa400e1164

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