Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f96e86ab5c0e70e…

MALICIOUS

PDF

80.6 KB Created: 2021-03-15 03:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d46d2ce30b9aff6dd74e4bc566a7486a SHA-1: 07bce3021eb94ae18a8ce9e76b1a4bddc0c1948c SHA-256: 4f96e86ab5c0e70ed01911a11e084d0346f5dd39b50952b80590584484e799dc
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 0.9996

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
  • 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://crophysi.ru/wix?keyword=saints+row+the+third+money+glitch PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483591/normal_5ffc1107a9bf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413347/normal_5fd03ccde7b52.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/T5gf2jj/vukusaxelilezijanumin.pdfIn PDF document text
    • https://dogusomuribe.weebly.com/uploads/1/3/0/8/130814063/jofaxum-rusiwu-gobekupaxag.pdfIn PDF document text
    • http://leseweremizew.scienceontheweb.net/exercice_nombre_rationnel_4me.pdfIn PDF document text
    • https://cdn.sqhk.co/zitibidino/7aNHhfb/wibemapujasivofa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473379/normal_5fd64b6fdad40.pdfIn PDF document text
    • http://nadipewin.mywebcommunity.org/sennheiser_ew100_g2_parts.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/systems_engineering_jobs_tucson.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/past_perfect_tense_rewrite_exercises.pdfIn PDF document text
    • https://gumomerad.weebly.com/uploads/1/3/1/8/131856086/fafogipevidesonep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460070/normal_602ec74794347.pdfIn PDF document text
    • https://goneduxif.weebly.com/uploads/1/3/0/9/130969586/86da55e89e1b0c.pdfIn PDF document text
    • https://gifezimudafero.weebly.com/uploads/1/3/4/3/134312010/viwexovepidusozakeso.pdfIn PDF document text
    • https://vidokabotofasi.weebly.com/uploads/1/3/4/8/134868814/3943604.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458824/normal_5ff574e76160f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427282/normal_6012e378d80c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463809/normal_5fd3ab6d58ff0.pdfIn PDF document text
    • https://cdn.sqhk.co/silakozafi/iRXhi9R/72788220556.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/xasovewipeje/dasigos.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/what_are_the_three_types_of_biomes.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/xuwituw.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_off0000faf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF1 5648 bytes
SHA-256: 3667244014275b929e80ad4fca4f39664704fe350c9a63ea42c895c0296cacf2
font_01_sfnt_off00010e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0F 11296 bytes
SHA-256: ea175094f955f66600449c2f11b80c6fa572d0ffea18027435d9db00e963e8e6

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