Malicious PDF — malware analysis report

Static analysis result for SHA-256 df24f7210f587cbf…

MALICIOUS

PDF

78.6 KB Created: 2021-04-09 15:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 587f991513bc461cde722b609cd79092 SHA-1: 50868eeca6f7cebf9013d57ca675222392265336 SHA-256: df24f7210f587cbf15e6ebf93d073034ee670225d0857b2a22d6a988a8417f49
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 0.9995

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://mezovuduw.ru/strik?utm_term=hamilton+beach+half+pint+ice+cream+maker+recipes PDF link annotation
    • http://tofotibuwul.sportsontheweb.net/google_cardboard_apk_android_4.4.2.pdfIn PDF document text
    • https://cdn.sqhk.co/wuxobilan/j1Akhc6/rikelopobupuge.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/jagQBuE/16468827804.pdfIn PDF document text
    • https://cdn.sqhk.co/fewesiwe/3MvTLhf/birevodunepemunusatezezo.pdfIn PDF document text
    • https://cdn.sqhk.co/nodujugebi/hd9rF3w/92378021652.pdfIn PDF document text
    • http://missunik.space/judoxutafikoswtk.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/rhggoyu/abaque_fosse_septique.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetijesi/Ujbjcgi/33780659120.pdfIn PDF document text
    • https://cdn.sqhk.co/wukatigubo/fghjgVL/aliexpress_luvin_hair_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/sadinuko/g9ZtVgT/pandora_s_box_image.pdfIn PDF document text
    • http://gratoraama.space/academic_journal_on_information_managementqe2ux.pdfIn PDF document text
    • http://topstop.site/how_to_sign_up_for_obamacare_2020ddmb7.pdfIn PDF document text
    • http://zesegalos.scienceontheweb.net/gagodenogam.pdfIn PDF document text
    • https://cdn.sqhk.co/winogolelog/AJdgfid/mibubagixalevurok.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://s3.amazonaws.com/lonozote/is_the_hunger_games_book_appropriate_for_a_13_year_old.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9dfec21-49b8-4d18-8a48-92518796be17/how_to_use_a_kindle_fire_without_registering.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/sidujopenuwa.pdfIn PDF document text
    • http://rorazizaxaf.atwebpages.com/rebejagotuzesujonutozuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0d3b5a-54a0-4013-92de-ce12d469f694/the_7_fallen_angels_names.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/xosekitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72c9ef39-f163-4e95-972a-187e8bfcf467/73420718890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c3e91b-bd1a-458b-8981-0aa5487b353e/84635119348.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_off0000e872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE872 5208 bytes
SHA-256: 95b8fc75315b99884bfa2b9518bdc546c3f424abe59c288514bd129dc0fb5468
font_01_sfnt_off0000f9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 10804 bytes
SHA-256: 66743e6c9af4ee4c6d1f3f6e96dffdffb9a3c3ecb907bd2f14539fe24333c28a
font_02_sfnt_off00011ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA7 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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