Malicious PDF — malware analysis report

Static analysis result for SHA-256 788074554bf03688…

MALICIOUS

PDF

74.8 KB Created: 2020-11-14 03:37:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e54c731ab801d7f6b2903027eda11261 SHA-1: 3559aa373096723ba26148dde5360f195ef1cac8 SHA-256: 788074554bf0368850f9dd4b2e144468735272241a835c75b191a2522449f099
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to known malicious redirectors or are part of a link farm designed to manipulate search engine results. The document's content, presented as an "Annie Oakley TV show episode guide," is a lure to encourage users to click on these malicious links. The ClamAV detection and ML classifier further support its malicious nature, indicating it is likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=annie+oakley+tv+show+episode+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4451945/normal_5fa47d3c89938.pdfIn PDF document text
    • https://nexajatolotol.weebly.com/uploads/1/3/4/3/134308242/kifez-xixasepu-jixakopeva-bonigawa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f9c401eabe40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f872fc87fc8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374951/normal_5f9e4188ba8d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465252/normal_5fa5757b73148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425484/normal_5f9fe5b4e517d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420029/normal_5f962e77196a9.pdfIn PDF document text
    • https://gerexogevi.weebly.com/uploads/1/3/4/4/134463414/torivajuv.pdfIn PDF document text
    • https://gopogaxewose.weebly.com/uploads/1/3/4/0/134013169/4876557.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/xanilo_diminakobena_rowowaxakigo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_5f885bd3beabb.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/libowebujakux/daru_badnaam_video_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/packet_tracer_5.4.1.2.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/how_to_quote_tweet_on_desktop.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/discussion_points_for_readers_of_kindred_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/complete_list_of_phobias_from_a_to_z.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DD 5432 bytes
SHA-256: 329b621011165070101037d5f147eb6ab419173cc389607f06fd514de06f22de
font_01_sfnt_off0000f97b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97B 10856 bytes
SHA-256: 6804a73d5e9cadc3380adb1077e9cb172caebc6e9028b46428597b1a6298f66b

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