Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fcd56661e740945…

MALICIOUS

PDF

65.0 KB Created: 2020-12-09 11:57:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6d131ecd37c07954b1b40c57029cbbe8 SHA-1: 914f6aa3a0b6d41c965e7714699200b841cc2b5a SHA-256: 4fcd56661e740945f1cd14ead23448f59db8bce326f13c65614bf829a7e75924
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/strik?utm_term=sua+may+giat+tai+nha+quan+binh+tan PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413845/normal_5fa100cd75d00.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc1df7188c99b6d37ae0383/t/5fca6ea2f0337c20475e9e9e/1607102114750/57348849575.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/mirena_diu.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/wakepuvepozime.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29253a3bf4b14abb3bccc/t/5fc54a6a6457125654ea6d01/1606765163203/blockheads_zombies_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39101c9c-19f4-4e5b-8515-e92ff41bfa90/colorado_asthma_and_allergy_fort_collins.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10b9cab79f442f22a6952/t/5fc15db97acac6192af3d333/1606507963685/98959805798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2580476c-1511-4854-a52a-ed3412e5f9c1/30928709195.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcff243ca23154c95bc92a/1606221604946/lamedutaneremijuveniv.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/new_odia_movie_all_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/sajetesiligetamim.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6760e116eb00e3c72343a/t/5fcde980cded405bb8fb7ef4/1607330178493/beast_quest_ps4_gameplay_fr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87a97ea0-1ad5-4e42-8a13-c22024f1a9fc/kijixekelafalodixi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ed69e2fce462bca5ae1b/t/5fc528f67acac6192a674984/1606756607123/clash_of_clans_lightning_spell_update.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_off0000c1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1F9 5264 bytes
SHA-256: 29501fd8c4a2740043bd656df7bbb01cbc66b457864b0b2cb95c968c664e1c34
font_01_sfnt_off0000d3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C7 10448 bytes
SHA-256: ba4f20ac74144fcab0b3117641168049b60403c3fea548960ce5ba94a5d49d3e

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