Malicious PDF — malware analysis report

Static analysis result for SHA-256 bccd4df4256a96cb…

MALICIOUS

PDF

82.8 KB Created: 2021-05-09 02:07:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e3657bdd005b1379b62179b01fac7499 SHA-1: a8a2784f979929d3cdcc6ee1a2f791571f153056 SHA-256: bccd4df4256a96cb2dd304c851975c54ee019a3726dbb6f5b10ed4667d00f736
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 0.9967

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/strik?utm_term=cheat+code+farming+simulator+2015+xbox+360 PDF link annotation
    • http://pugezesiw.mygamesonline.org/destination_a2.pdfIn PDF document text
    • http://greyfruit.space/51633181173rpnnn.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/7778b.pdfIn PDF document text
    • http://armada.technology/53734713132btsn2.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/hjijiiZ/banner_saga_2_random_events.pdfIn PDF document text
    • http://xasanefajisa.sportsontheweb.net/41066743009.pdfIn PDF document text
    • https://tajaleder.weebly.com/uploads/1/3/5/3/135320318/6c564.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/cJUhdjc/538965206.pdfIn PDF document text
    • http://fashion-deals.xyz/nizuxuniwesosazofiziboluounas.pdfIn PDF document text
    • http://kiritisivasol.mywebcommunity.org/standard_cover_letter_for_job_application.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/82100180149.pdfIn PDF document text
    • http://allostar.buzz/garuxovukolulireads6h.pdfIn PDF document text
    • https://cdn.sqhk.co/navozaxezini/gMTjggq/yellow_lightning_bolt_background.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/yQibHid/f_stop_gallery_pro_apk_free_download.pdfIn PDF document text
    • https://tilinonulubun.weebly.com/uploads/1/3/4/6/134614078/2412752.pdfIn PDF document text
    • http://1ux.site/how_to_get_ohio_cops_license_plates_online41tkm.pdfIn PDF document text
    • http://reduslimitalia.site/arctic_king_air_conditioner_user_manual8iot0.pdfIn PDF document text
    • http://hookup750.website/sojemutilemabe03b2z.pdfIn PDF document text
    • https://lonokowikur.weebly.com/uploads/1/3/5/3/135384913/nutozixix.pdfIn PDF document text
    • https://cdn.sqhk.co/xazakamugi/giGhahb/taken_souls_blood_ritual_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbad82a1-2908-4d01-9d44-59331e3625b9/50_shades_darker_unrated_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84856b2a-295f-4b78-ade6-f233b398f846/pitunivivemomoxidep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d27cd1b5-bcbf-40b7-a9e8-3559b5346d4f/i_believe_statement_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f227887-ba90-404f-a0c7-5679996ea1b8/2014_nissan_altima_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92cd909d-96f7-4330-8695-cf45279bfb31/21599201858.pdfIn PDF document text
    • http://doritiwenoxa.onlinewebshop.net/39150331828.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AE 6316 bytes
SHA-256: 2872296803dae3f069133f543c63b633c95d18b583c51fbc7b5b8ed260d5d870
font_01_sfnt_off00011702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11702 11348 bytes
SHA-256: 7dcd606c2e42f9a26e4ceb0380ac1efd2fa20ebaa0006de7f3964ace6ec41715

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