Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f48788f81ae82c0…

MALICIOUS

PDF

78.1 KB Created: 2021-04-24 18:11:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5946b233fbe56dd6f302dd97e455b8d1 SHA-1: 64c4bb83e24101cd7ed5a96b2b8d09622c841e15 SHA-256: 7f48788f81ae82c0b6a13d070f6724950bbb5e9da7f130b38460f846a696ab75
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/strik?utm_term=agatha+christie+movies+on+netflix+india PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419851/normal_5fe738169380b.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/QigRnif/xibolenumuxezafupavowum.pdfIn PDF document text
    • http://maporirunigis.22web.org/povesetorib.pdfIn PDF document text
    • https://cdn.sqhk.co/nedupugifuka/jfBTGhg/adobe_illustrator_draw_ipad_review.pdfIn PDF document text
    • https://cdn.sqhk.co/bafiweba/hj7rjcS/xemoreduzofavofedigokolor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5fd6836b43c2a.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/QDXjhuD/kemanatulefixezus.pdfIn PDF document text
    • http://wonozudobitisog.scienceontheweb.net/ssc_exam_calendar_2020_20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_6030e90b95862.pdfIn PDF document text
    • https://cdn.sqhk.co/japexexuko/uQzihfv/fs19_mega_farm_challenge.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/gjfgijb/great_white_shark_eating_whale_in_hawaii.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/ucpghlC/57878489447.pdfIn PDF document text
    • https://cdn.sqhk.co/xaduwudixum/1gdjjgf/baking_chocolate_recipe_cocoa_powder.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451205/normal_606d9180e0670.pdfIn PDF document text
    • https://cdn.sqhk.co/tazakabebilo/Nuhj6PR/manycam_easy_live_streaming.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/rijejag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zutumifamele.rf.gd/25321251307.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/xawoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a3fe080-7339-429f-a908-c23173c868c0/94819848979.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ededa34f-b2ab-4973-96be-3a7ec089c208/xoxikerudabexukizugudevom.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/niwufumesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dadc3d03-b38b-4bd5-b003-7016fcdf8495/call_of_cthulhu_edge_of_darkness.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DB 5552 bytes
SHA-256: 6db8b518422acee4bd3dc676dd8c6c0d420657ed45ab567f9bcb2f598d4029aa
font_01_sfnt_off000105a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A2 11032 bytes
SHA-256: e1f92a88e9502e40c395158547772fe1c1836a12e9b91c2c0228cbbd05568c44

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