Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9b355b68003f92…

MALICIOUS

PDF

74.5 KB Created: 2021-06-05 23:54:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d6ac0bd32c11cdb53e565dd7a5fb60b SHA-1: 34d75516b9a15fe0fe819fb19c3e093c3e86ffcf SHA-256: 3d9b355b68003f92fe87e3f594d1895af982d3b3b110debbc4d569c9737c4d82
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, and an embedded URI pointing to 'https://jumiwimov.ru/123?utm_term=maai+teri+chunariya+lehrayi+song++pagalworld'. This suggests the document's primary purpose is to redirect users to potentially malicious or SEO-manipulated content. ClamAV also detected it as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/123?utm_term=maai+teri+chunariya+lehrayi+song++pagalworld
    • https://jeximikukadolo.weebly.com/uploads/1/3/1/6/131636734/9410590.pdf
    • https://static.s123-cdn-static.com/uploads/4379602/normal_5fecf76961e8d.pdf
    • https://nuwurabe.weebly.com/uploads/1/3/4/4/134477198/7418265.pdf
    • https://static.s123-cdn-static.com/uploads/4460043/normal_5ff962f9003c2.pdf
    • https://popoxalisasuper.weebly.com/uploads/1/3/0/7/130775362/4318152.pdf
    • https://cdn-cms.f-static.net/uploads/4474450/normal_6057159d394f7.pdf
    • https://vituxusupodewe.weebly.com/uploads/1/3/1/3/131379836/fesezeboraxokotatop.pdf
    • https://cdn-cms.f-static.net/uploads/4475565/normal_6016e5db25f9c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4e599797-93fa-412b-9d26-d2d09bf64a21/asana_pranayama_mudra_bandha_free_download.pdf
    • http://wigiwopajuke.pbworks.com/f/91960114253.pdf
    • https://uploads.strikinglycdn.com/files/302056b9-da60-4deb-a70d-d4bfa6c29941/best_dinner_for_weight_loss_in_tamil.pdf
    • https://uploads.strikinglycdn.com/files/5a6805d8-9c04-47d2-b7a9-277c925a1e99/light_one_candle_for_hope_one_bright_candle_for_hope_lyrics.pdf
    • https://uploads.strikinglycdn.com/files/cedc6ad5-cc06-4360-9d95-0d056567035a/36924726440.pdf
    • https://uploads.strikinglycdn.com/files/6eeba1ef-f293-4307-bbfb-dc06e545ae61/how_to_allow_chrome_to_run_flash_player.pdf
    • https://uploads.strikinglycdn.com/files/f7f2dc74-bff1-4acf-aa4d-e08b3d0a4789/sufewirikodax.pdf
    • https://uploads.strikinglycdn.com/files/b0f6b5d0-4266-4140-b41f-611e35069310/37281624440.pdf
    • https://uploads.strikinglycdn.com/files/d1eeaf4e-69bf-4bbe-9629-78680be8052e/digital_stream_dtx9950.pdf
    • https://uploads.strikinglycdn.com/files/0f459642-61a6-47fd-9d67-8a88cd8bb78e/andrew_foster_facts.pdf
    • https://uploads.strikinglycdn.com/files/746915af-e59e-4070-988a-4be7b9a75ffd/57592907985.pdf
    • https://uploads.strikinglycdn.com/files/c49415e2-4501-4bcb-ad2c-1a07910657ac/danby_premiere_50_pint_dehumidifier_reviews.pdf
    • http://vananizi.pbworks.com/w/file/fetch/144521904/pegewipegofib.pdf
    • http://xojifot.pbworks.com/f/what_does_it_mean_to_keep_a_promise.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e407.bin
996cd8a28c9fad197c992077f420b0cd80a5fc1dddc0c1f437294a2dc0187846		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE407 5532 bytes
font_01_sfnt_off0000f6fa.bin
ffd9f435d897d0c493df7a7485d08aee90e7066f6f39f2a2ac0f7de6ce8e32fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FA 10884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.