Malicious PDF — malware analysis report

Static analysis result for SHA-256 745e08334475c914…

MALICIOUS

PDF

75.2 KB Created: 2021-03-23 15:43:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d7aac94275c77ccbfdd586fe5b35f32d SHA-1: 552116afe808552bbb2a3d1c907db6ccb72f2a5c SHA-256: 745e08334475c914b40410a91698220f26ea38fc28776a0f75469046f84c2090
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://mezovuduw.ru/strik?utm_term=who+narrates+artemis+fowl+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382784/normal_6054d070e1bac.pdfIn PDF document text
    • http://hisgohar.site/vigokabawumen5fxt.pdfIn PDF document text
    • http://apsdd54gfv.xyz/vusukizevapusisiybipm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470828/normal_600a688cd31f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471099/normal_604f4888d1bce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403404/normal_5ff3062512b49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415524/normal_5ff16cc88dc16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373008/normal_5ff252916d81c.pdfIn PDF document text
    • https://cdn.sqhk.co/zumumolebajo/ii1icbx/stress_management_activities_for_school_students.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/how_to_replace_a_belt_on_a_maytag_bravos_dryerqvx2m.pdfIn PDF document text
    • https://cdn.sqhk.co/bumegukomuza/uiiidgf/20618683793.pdfIn PDF document text
    • http://scotiaenlineape-personas.com/75056992394ohdj1.pdfIn PDF document text
    • http://trujillostacoshop.com/strides_running_shorts_with_hidden_pockets6sj92.pdfIn PDF document text
    • http://peroruse.iblogger.org/gnossienne_no._3_sheet_music.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406463/normal_5fe85af77341a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_600b66aa8ee6e.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/laradusa/pidedisuzajavo.pdfIn PDF document text
    • http://zitejilid.epizy.com/kinetic_typography_template_after_effects.pdfIn PDF document text
    • http://vedarazugu.rf.gd/opposite_words_in_english_file.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/what_is_a_revolving_line_of_credit.pdfIn PDF document text
    • http://rovafitazilom.epizy.com/stop_automatic_in_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/audio_technica_lp120_user_manual.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 4

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_off0000e98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98F 5172 bytes
SHA-256: 5df24a2daf0850e3288b109efb17757a0d4aefdee3ac35251c32198510d52a63
font_01_sfnt_off0000fb16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB16 10684 bytes
SHA-256: 5fdf292dc5ed827db09662692fd12fdbed480d581ca8645c647968830d842658

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