Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d07390fda90af6e…

MALICIOUS

PDF

78.9 KB Created: 2021-02-24 00:46:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 56fbe3c46c27e70b2c2a003367154d61 SHA-1: 99e833dc78ebd1c817281d2cb9870dd1e9c0c088 SHA-256: 0d07390fda90af6e69bae4221ed310a105cde5e44d14feee4266a68f2fe7c796
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 0.9998

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://maypoin.ru/strik?utm_term=business+analytics+degree+jobs PDF link annotation
    • https://cdn.sqhk.co/xixofivib/gdqjehd/mortal_kombat_movie_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/kavuluxaja/b0XOlhd/bopegugawubi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_5fe890369530d.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/hhrnxgj/electronic_components_store_dublin.pdfIn PDF document text
    • http://zdsshop.top/yamaha_fascino_imagesxlvw1.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwutu/gjzgfhe/tesla_battery_day_2020_date.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/12465500037vzeq5.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/gjjj9hd/sodugitafigabibite.pdfIn PDF document text
    • https://cdn.sqhk.co/rubovadu/gQTljhW/bepomi.pdfIn PDF document text
    • https://cdn.sqhk.co/fusureviweki/pTJhhhj/download_videobuddy_penghasil_gopay_apkpure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461219/normal_60243aa07dfc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408348/normal_5ff8ff50901ee.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/QBgccib/66133130814.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/aABjbR8/81558442411.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuzasana/jkgejbT/26873775978.pdfIn PDF document text
    • http://natbeach.space/nh_gi_kim_ting_anhflveq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422876/normal_5fdbb8ba88b64.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/zombie_sniper_3d_ii_here_they_cometjkci.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/rogugagatuf/58812610725.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE299 5476 bytes
SHA-256: 89e072b5471edc3f56c1a33bfef88611847d5d67e80398290992a2d17f185bde
font_01_sfnt_off0000f552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF552 10776 bytes
SHA-256: 00bebe87db4dea28ccec6b6096e94c7e0f654dd39d9da3a666ffea972d1ce6c4
font_02_sfnt_off00011906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11906 16240 bytes
SHA-256: 5f9ffda1e39b9e4a77e3c184c88f1fc08860df079af947a248f5130f89cd71ff

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