Malicious PDF — malware analysis report

Static analysis result for SHA-256 702c15df11d33c68…

MALICIOUS

PDF

81.7 KB Created: 2021-02-28 17:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ad24f54216726294e6a5169d233e3233 SHA-1: 3c11edaf3329db7190fdc54bfcf99fe00ae4d791 SHA-256: 702c15df11d33c6811544e40ea4b092963b8bdca3df4705eb3f5ae0d6a135597
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is detected as a phishing trojan by multiple engines, including ClamAV. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high volume of links on potentially untrusted domains, further supporting the phishing or malware distribution intent.

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://resalured.ru/123?utm_term=easy+italian+words+to+learn PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379500/normal_5ff4cbb7b13a3.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/KkuV7hg/photo_editing_app_free_for_pc.pdfIn PDF document text
    • http://smartradiobf.ru/10912471983w4z7m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528876/normal_5fe60f636aa31.pdfIn PDF document text
    • https://cdn.sqhk.co/noloxunipe/JgcKz0Y/love_story_movies_2019_download.pdfIn PDF document text
    • http://mnogolidov.xyz/fonomaninojijajuxiva3sij0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_602e1fd07c8dc.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/whirlpool_duet_sport_dryer_not_starting.pdfIn PDF document text
    • https://golujubomo.weebly.com/uploads/1/3/4/0/134017735/a078ce9dddd.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/agiijDZ/cloudplayertm_platinum_cloud_music_player.pdfIn PDF document text
    • http://justiciaforjustice.com/bogidadogotosjflpa.pdfIn PDF document text
    • http://lofajemami.sportsontheweb.net/will_the_magicians_season_5_be_on_netflix.pdfIn PDF document text
    • https://rulusekiraz.weebly.com/uploads/1/3/5/3/135322703/pukujem.pdfIn PDF document text
    • http://bigtittybella.com/hmrc_cumbernauld_vat_bank_detailsn1x7o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408197/normal_60074d280a2f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452169/normal_601446a9ba2aa.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
    • http://rakimeramut.epizy.com/domomanatenajel.pdfIn PDF document text
    • http://zuputes.atwebpages.com/81724454326.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/annie_john_book.pdfIn PDF document text
    • http://xekabotiwuker.atwebpages.com/49249574688.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_off0000f31d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31D 4756 bytes
SHA-256: deb375aecc116d7bb7a496801cb04089da77eac2440311c8e82bcd9922de32f2
font_01_sfnt_off0001035e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1035E 12084 bytes
SHA-256: 2c84ab5c39c29dfa92f79fad5f6a371b4153c5e0b7131be69ed092858ae39a51
font_02_sfnt_off00012afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AFD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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