Malicious PDF — malware analysis report

Static analysis result for SHA-256 439cc3499b63576a…

MALICIOUS

PDF

83.2 KB Created: 2021-03-18 12:27:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b120685bbccf74195fc0a91967a87256 SHA-1: 2b27d9a581cb36ef23f5a861e54a89cfdfcecdc6 SHA-256: 439cc3499b63576a2ba9812d20d87deb718cc1b873093d60bbafcffb5e2fe88f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://nipisod.ru/wix?keyword=nerf+hammershot+mod+guide PDF link annotation
    • https://cdn.sqhk.co/xojugako/3ib5ihE/29314126931.pdfIn PDF document text
    • http://mixixokixa.22web.org/lamalivowok.pdfIn PDF document text
    • https://cdn.sqhk.co/vixuwegijelo/jeyzPxA/buxomovabusowunema.pdfIn PDF document text
    • http://gifudevuf.iblogger.org/soxuvutijekasofolumivo.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/ghLmhdY/vande_mataram_ringtone_ar_rahman.pdfIn PDF document text
    • http://zanupolema.iblogger.org/bodej.pdfIn PDF document text
    • http://kufeduli.22web.org/archetypal_literary_criticism_examples.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/nufidibodudulad/android_kotlin_google_maps_tutorial.pdfIn PDF document text
    • http://wozunitififut.epizy.com/47981944510.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/gingerbread_house_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/electrolysis_process.pdfIn PDF document text
    • http://solatilexi.epizy.com/65645244394.pdfIn PDF document text
    • http://beguresenoraw.epizy.com/kanmani_pol_en_amma_song_masstamilan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a0226d6-1922-4bdc-8e70-24daff59b92d/xarixesezitoxom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8db7ce85-de80-401c-bbbb-27bf4558e915/xubudakove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38ff48a4-28e2-44be-b65b-3411b5040e30/how_to_brine_a_turkey_for_big_green_egg.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/mcgraw_hill_algebra_1_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/vilomolofumoluzoluvamona.pdfIn PDF document text
    • http://gefubuforuz.epizy.com/best_place_for_stock_market_news_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/33681069656.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_off00010b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B05 5260 bytes
SHA-256: 737dd688a2a1281419b7f4e31fa4765212a1d168088c59ead96bd3571840c9da
font_01_sfnt_off00011cbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBE 10324 bytes
SHA-256: da6e0f18f2693db4aaac655ce57fa90ff7086ec57b1f7b8341114bfb7423a430

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