Malicious PDF — malware analysis report

Static analysis result for SHA-256 94766e892c8e07f3…

MALICIOUS

PDF

68.4 KB Created: 2021-03-16 15:45:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b631f51826332513010809a5a15f4372 SHA-1: 986ffa9c36a34b4d6027c6495ffd3903232d30d6 SHA-256: 94766e892c8e07f3b6b8b7bcd59e2db5ca7298d691c3a2b79618971696bd816a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jottigo.ru/wix?keyword=chapter+13+section+3+the+war+with+mexico+guided+reading+answers PDF link annotation
    • https://cdn.sqhk.co/tatolodam/YRNjhjh/jobawelirut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482854/normal_6023ce34867e2.pdfIn PDF document text
    • https://rorezumi.weebly.com/uploads/1/3/4/5/134591247/2386069.pdfIn PDF document text
    • http://rotixumuzu.22web.org/baretumopefafolabamazodet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455195/normal_5feb495029567.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/hggemnJ/tabofuzugavilezubeja.pdfIn PDF document text
    • https://vomukefepa.weebly.com/uploads/1/3/1/8/131872153/a2988.pdfIn PDF document text
    • https://ginarelerojafu.weebly.com/uploads/1/3/2/8/132814261/kututujeve.pdfIn PDF document text
    • https://gulipuzajetag.weebly.com/uploads/1/3/5/3/135397689/7440954.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455208/normal_6010e2bc18263.pdfIn PDF document text
    • https://cdn.sqhk.co/tategupet/jg3TTgc/bunefutemimamuvufa.pdfIn PDF document text
    • http://penexej.mywebcommunity.org/gta_san_andreas_cheats_download_in_english.pdfIn PDF document text
    • http://daxamel.mywebcommunity.org/words_with_multiple_meanings_examples_and_sentences.pdfIn PDF document text
    • https://kivalake.weebly.com/uploads/1/3/4/8/134885121/5484f3045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411480/normal_600f72e40436d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481695/normal_600f470e87c74.pdfIn PDF document text
    • http://bixekakazozerol.mywebcommunity.org/famous_french_words_and_meanings.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462345/normal_604944c2009bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496015/normal_601f0c94cba20.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nupakavidowux.epizy.com/evaluating_single_variable_expressions_worksheets.pdfIn PDF document text
    • http://povokufav.epizy.com/amazon_technical_program_manager_interview_questions_and_answers.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/fetipiwixine.pdfIn PDF document text
    • http://vezogut.rf.gd/28145659585.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_off0000cd0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0C 5736 bytes
SHA-256: 8bcb00983fe10c6e2c49797eb6ba9a3a84f1a77809c26ff1859e9276d3cefbe2
font_01_sfnt_off0000e07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07C 10280 bytes
SHA-256: 82db34e99be42f9d1ef0cb0e5aeec43379fc8defae481568a66bd0ddf6419b62

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