Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd1e82c25888824…

MALICIOUS

PDF

77.5 KB Created: 2021-03-16 23:57:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 82cfe0ec3a3ff3855ea2968981e6f0f6 SHA-1: b1c897566c8991178e8ac3c0d6caac9d808e2684 SHA-256: fdd1e82c2588882450ef3d7c5ba3bc0410509169ae3003254874ae92a3f0e9b4
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 0.9991

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://leonvi.ru/123?utm_term=candy+crush++for+android PDF link annotation
    • http://basumoxivor.sportsontheweb.net/introduction_to_philosophy_classical_and_contemporary_readings_7th_edition_free.pdfIn PDF document text
    • http://accface.in/completed_d_d_character_sheetdq9t4.pdfIn PDF document text
    • http://matras-24.ru/52688497032t6qq1.pdfIn PDF document text
    • https://cdn.sqhk.co/rapedipular/LBhgHih/patriot_off_road_park.pdfIn PDF document text
    • http://myyshooop227.site/236284786f9unh.pdfIn PDF document text
    • https://cdn.sqhk.co/tamotewewo/ndHsxrt/38928546221.pdfIn PDF document text
    • https://cdn.sqhk.co/jikowuzu/ghdyel5/84287783084.pdfIn PDF document text
    • http://blog-millionaire.buzz/knysna_440_reviewkb3c8.pdfIn PDF document text
    • http://bamitizelomodil.22web.org/pindah_file_ke_word.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/ralamatovejef.pdfIn PDF document text
    • https://cdn.sqhk.co/dapumexader/diiDdZ7/62678340102.pdfIn PDF document text
    • http://circus.market/ledoxipuwebutapnkgqk.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/nanuz.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/zaxuledo/patent_ductus_arteriosus_2016.pdfIn PDF document text
    • http://novogizeboje.myartsonline.com/dyson_cyclone_v10_animal_cordless_vacuum_costco.pdfIn PDF document text
    • http://gitadewer.rf.gd/35509072237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4186018b-aefe-4283-8a6e-ea061bcf515d/over_the_rainbow_ukulele_song.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/62434030374.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/79294612157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77eec353-087f-43a7-b332-c0dd82ea357b/stihl_fs_85_workshop_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c55ceb0-9a54-4502-93c5-da514ab0c3fe/10373421030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ed34b80-dd1a-4ea0-8550-a33a0c1816f8/sebumaxuza.pdfIn PDF document text
    • http://luselobek.epizy.com/74355747266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f4d7535-5e8e-407a-b6e4-aee3cd059c35/how_to_control_tv_volume_with_firestick.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/lodatejebeb.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_off0000eed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED9 5084 bytes
SHA-256: 1dee9b21ee1c43084abc3588a168f0eed3818596d33e44b91ea854ea4b252546
font_01_sfnt_off00010024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10024 12224 bytes
SHA-256: 3bf7e1b5eaa0547d6900d699de8c1961e772bf20d2cc59bc8f4c25bc40bbf1ea

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