Malicious PDF — malware analysis report

Static analysis result for SHA-256 d002ac4c7d48bb31…

MALICIOUS

PDF

83.0 KB Created: 2021-05-18 11:20:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bf22db782ae59f9140587101f5bb1157 SHA-1: 533a12f40f1673ba6c69d4b514fe52d674b1a9f1 SHA-256: d002ac4c7d48bb31670b8555bbe0e8f9768274c56300365a0151e7baf99ce06a
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 0.9997

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://lozipotod.ru/strik?utm_term=diagrama+de+fusibles+jetta+a4+2005+en+espa%25C3%25B1ol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445118/normal_6069a14702239.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386074/normal_603487fc65269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426423/normal_603996fa8b1a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_602fec889483a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500200/normal_5fd63852431b0.pdfIn PDF document text
    • http://xajozixav.iblogger.org/android_studio_adb_upgrade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402717/normal_600e5bae537b1.pdfIn PDF document text
    • http://gadosamu.iblogger.org/how_to_pick_red_leaf_lettuce_from_garden.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_604634079bb11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458849/normal_6023d42acc9ec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wafepedowixe.rf.gd/49865702989.pdfIn PDF document text
    • http://fexenisidewa.rf.gd/21236771391.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/cambridge_colleges_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/induction_of_labour_guidelines_queensland.pdfIn PDF document text
    • http://ruvowepager.epizy.com/55685020031.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/pl_sql_coding_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/besopuliziwel.pdfIn PDF document text
    • http://mawabubobiniz.rf.gd/78475574072.pdfIn PDF document text
    • http://dusefepov.epizy.com/12249326017.pdfIn PDF document text
    • http://zabukek.rf.gd/guided_reading_activity_4-_2_us_history.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/navy_diversity_and_inclusion_training.pdfIn PDF document text
    • http://kesakopibovadob.rf.gd/guitarra_asturias.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_off0000fef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF7 6276 bytes
SHA-256: d3c879e28bafc8eb05402748bdb3397becfc68aa5da0f194f190fe25e9597366
font_01_sfnt_off00011409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11409 12452 bytes
SHA-256: b061a9241c96b154c24bbf3feab88046dd552615481cbaa11363ee64ce1d688d

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