Malicious PDF — malware analysis report

Static analysis result for SHA-256 2301ed2805eaae20…

MALICIOUS

PDF

81.5 KB Created: 2021-02-21 23:39:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 98bfc74f6eedaa687cf088d18bd75522 SHA-1: 056971936d6c010bcf46905d3831f7bdb5fbe9e9 SHA-256: 2301ed2805eaae205b6c243e5c620bd351a665072e750ef7816d84779cc8fa70
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a deliberate attempt to create a link farm for SEO purposes, likely to distribute malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the PDF is designed to redirect users to malicious sites, potentially for further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/123?utm_term=hamlet%2527s+mill+pdf+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4374699/normal_5fed69ca54595.pdfIn PDF document text
    • http://xtw2.club/duvadabakejekitifufuyarbj.pdfIn PDF document text
    • http://arm-watch3.club/pevoxcmupf.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/ijgjF8s/14926873380.pdfIn PDF document text
    • http://allfreebets.ru/6438342578666sew.pdfIn PDF document text
    • http://detonic-ufficiale.website/spider_man_2099_comic_19927ad1p.pdfIn PDF document text
    • http://uanews.website/vande_mataram_old_song_pagalworldsdx6f.pdfIn PDF document text
    • http://lady-bug.club/the_last_remnant_remastered_pc_versioncpkpf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451019/normal_600261e8608d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443356/normal_5fcc73e461bb7.pdfIn PDF document text
    • http://vorgazme.com/99614743632l8uy0.pdfIn PDF document text
    • http://thehensleys.org/wuriwulovump5zgx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385614/normal_5ff8ef983f144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421062/normal_601eb32b45802.pdfIn PDF document text
    • http://reduslim-italy.site/kifovovilopuzumul9xw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382770/normal_5ffd7c887a684.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://s3.amazonaws.com/zamemigojat/83098844115.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/modelo_de_memorandum_de_llamada_de_atencion_por_inasistencia.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/latudujiluriworudow.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/oxidised_copper_sheets.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_off0000ecd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD9 5064 bytes
SHA-256: ccbc9eed2d3f9625608e71587fcf85f4d1c925c2f87f106e3cd3d4400cac1819
font_01_sfnt_off0000fe0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0A 13400 bytes
SHA-256: 0dfae8b1e4c384c5797bce11a42d58e885d730a12889d2ac6872550328f8a529
font_02_sfnt_off000128b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128B8 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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