Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfe72810d4a47969…

MALICIOUS

PDF

44.4 KB Created: 2020-10-22 21:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: acb42ce9e8fbcd838cc94e78c46c705d SHA-1: 9247bf116fd1b2f76b979e20bf67899305d6c352 SHA-256: bfe72810d4a47969f65d79be68fec8d9a244746dcf83325e4951d4566bf5f3f0
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector, suggesting a lure for users seeking software downloads. The PDF_SEO_LINK_FARM heuristic further indicates a large number of outbound links, likely for SEO manipulation or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/123?keyword=best+manga+reader+for+android+free+download In PDF document text
    • https://xawaviwuxuj.weebly.com/uploads/1/3/4/2/134235980/77cf9.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/4520508.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/xejufe.pdfIn PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/xekovajinufobafo.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/kavitokolezub/tenob.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/21907098144.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/wumuvowagefowufotegusodos.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/assepsia_e_antissepsia_em.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1543/7987/files/91822991496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0346/0770/files/pepunekimulajixadejefifig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/lista_de_valores_personales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/83047123073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4468/4454/files/pefuvadumoditeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1423/2485/files/santa_muerte_prayer_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9478/5704/files/jusijakudon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/best_music_manager_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2263/1067/files/vuvadugoxemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b713029a-37ea-434f-bef1-32a4087bf374/65732489006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5730e059-0c97-471b-94a6-44e7fae74c9c/37365858647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67c08386-0635-421a-832f-22ad75261d1f/cars_the_video_game_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0150524d-2b1b-40e8-b8ef-302066d1f2fc/bobobefamogim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9c8fc31-8da9-4e5e-ab6c-5c2578ec0d6b/vusazopasofux.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_off00006e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E10 5368 bytes
SHA-256: 9593976497a70894ad6457276431fa857768d2ec72443bdfd3a93157c114c0f2
font_01_sfnt_off00008049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8049 10344 bytes
SHA-256: 6378e5e3465db8f032877566bf9d9f8410062b8f2e0eb840edaf909f27659335

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