Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f17c646c029643…

MALICIOUS

PDF

87.6 KB Created: 2021-03-08 23:03:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e67891890528f6535500f4f5df281e3e SHA-1: 5f808d884af1b834622cc91819478624ed43cbc4 SHA-256: e7f17c646c029643c64d52c7d29e0649a3553f9a9588936545b5ec42109ba30c
126 Risk Score

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 0.9989

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://botokaw.ru/aws?utm_term=champion+9375+watt+generator+reviews PDF link annotation
    • https://dovenokitumenu.weebly.com/uploads/1/3/1/4/131482991/difibolonowunoxa.pdfIn PDF document text
    • https://wazurewimi.weebly.com/uploads/1/3/4/5/134598950/vuvawodipimupufadew.pdfIn PDF document text
    • http://my-credit.info/different_types_of_gears_in_a_gearboxr271j.pdfIn PDF document text
    • http://idealicaitaly-ufficiale.site/does_costco_sell_samsung_phones49be8.pdfIn PDF document text
    • http://osummer.space/sales_director_jobs_atlanta34d3i.pdfIn PDF document text
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/5482958.pdfIn PDF document text
    • http://gazzsheff.xyz/xuwovusorepirapezuto4j3v.pdfIn PDF document text
    • http://energierecrute-emplois.com/jabewi3n3oc.pdfIn PDF document text
    • http://goodsfor.life/dosulexituxuwavapewa09td8.pdfIn PDF document text
    • http://idealica-ituficiale.website/free_online_games_to_play_on_chromebook6845n.pdfIn PDF document text
    • http://lightstart.xyz/buy_john_deere_ride_on_mower_australiaykkxm.pdfIn PDF document text
    • https://loxoxonejuk.weebly.com/uploads/1/3/4/6/134684666/nuramoj.pdfIn PDF document text
    • http://mailedflkf.site/kujenorerodugojidojodo1cedb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/493a3ff9-92b1-48c7-b24c-3ffb12104a06/how_many_calories_in_a_small_dunkin_donuts_iced_coffee.pdfIn PDF document text
    • https://d2faa26e-66ca-44cd-8f84-883624a71019.filesusr.com/ugd/dbbfd0_703bbd60fc6c48c88ac41af08a6e1258.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/da38ec0d-8362-46a5-a32d-768808ecec6b/gewodaxemelifozi.pdfIn PDF document text
    • https://a1f0096d-76f5-425c-b826-5ccbd312c1bc.filesusr.com/ugd/8f8c07_40c4daa588bd450486cf35ba963e74da.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/best_penny_stocks_to_buy_in_india_for_long_term_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/silitusewaluzibuxisekinu.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/xebajub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc1e8007-e94f-4c20-815b-2247a75b3fbb/31342367225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d760000-2d17-4a49-bf4f-23363ca0b2b6/the_kid_who_ran_for_president.pdfIn PDF document text
    • https://53860ffb-5975-4088-b838-5c82367c2827.filesusr.com/ugd/0d2908_5f6e428e86734d63b8b2950d287127bb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d79e5059-b3b5-42f5-80c5-3608678c7924/mafuvatanisen.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/bollywood_songs_free_video.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10993 5688 bytes
SHA-256: dbaf31993554035b428e6376a0dd12cafbaf100ce3443107945d4019334865f6
font_01_sfnt_off00011cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDD 10960 bytes
SHA-256: f08677217244b4cb25303b3561a3217a898707d6e62083815df60f951105c10f
font_02_sfnt_off0001426a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1426A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3