Malicious PDF — malware analysis report

Static analysis result for SHA-256 939e1ff6526a551e…

MALICIOUS

PDF

71.2 KB Created: 2021-06-12 15:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f6b9108f48358f550c3ec27fda78dcc1 SHA-1: 1695161f73b63b52a8b1755bd345eefc1ae83ca7 SHA-256: 939e1ff6526a551e6ae29a6453c5572a960bcf01b31cb6bcdc7072301032108d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic indicating a link farm and an embedded URI pointing to a suspicious URL. The document body, though heavily obfuscated, contains text related to 'Johnny English reborn full movie hd 1080p', suggesting a lure to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://philabc.ru/pbw?utm_term=johnny+english+reborn+full+movie+hd+1080p PDF link annotation
    • https://jivimukik.weebly.com/uploads/1/3/0/7/130775904/3743a.pdfIn PDF document text
    • https://moleresudiba.weebly.com/uploads/1/3/4/4/134447347/39ffc30887.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bbd11b1f-fcb6-4a2b-9a37-cce43b71daae/angle_worksheets_grade_4.pdfIn PDF document text
    • http://sezipakupuw.pbworks.com/f/taki_taki_video_song_download_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/244050a0-83f3-482c-b37f-f82e3d7253cd/sig_p229_dak_40.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ddff1c3-48ad-46fb-adbb-0b7c41620859/70443316839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4515e420-7525-4d80-a96c-b3a44b55769a/90784240511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f697aed8-e89f-4a18-82c5-a41e46149e9d/harry_potter_and_the_half_blood_prince_game_all_spells.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08d21699-d171-458e-a973-9d054ffd923b/ejemplo_de_dialogo_escrito_entre_dos_personas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7f5b6b1-fa87-458b-8ca6-0011dc1577f9/funny_santa_quotes_from_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3dc2958-5773-465a-aa99-5154bbd28eea/24085197044.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75b39c0-a56b-4141-a613-2eeec84b5ae2/tyt_th-9000_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eda8c8c9-8853-48b1-9896-a0c7aedb2b50/26185905079.pdfIn PDF document text
    • http://givuvop.pbworks.com/w/file/fetch/145191576/5_month_old_heart_rate_sleeping.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a92a033c-d8f5-4823-ad61-cc6b11efc6e3/ronopumofeveduvuvel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/538d3981-0785-4593-8062-7b3c4b1ace07/zonizikamutumomiros.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7126e7be-f6b1-454a-a763-dcc70062988c/33475285259.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC769 5724 bytes
SHA-256: f95ab48f49262c226f07aa246b33de2cfec068007c88625a7a3e3e8025500fff
font_01_sfnt_off0000dab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB3 10492 bytes
SHA-256: f2052532af803a440012bee28c9d0dd8a077fb58a33fc3d0203fd563cc81cc81
font_02_sfnt_off0000fe6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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