Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f456c6c5d5d005c…

MALICIOUS

PDF

81.3 KB Created: 2021-03-16 06:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 421634e31dccb2abbf43a8b4580e90a8 SHA-1: b05c9a1401aecdc1ca7fbde94b2161e3d637717b SHA-256: 9f456c6c5d5d005c4c161a9f2b53ad8a9ee595dd566b20888ce7ef714665caf3
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 0.9998

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 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://lozipotod.ru/wix?keyword=public+administration+may+be+defined+as+mcq PDF link annotation
    • http://timelessdecorum.com/how_to_get_a_commercial_drivers_permitjw90j.pdfIn PDF document text
    • https://cdn.sqhk.co/zevolazezag/ojdjie5/wopixesumijib.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/821080.pdfIn PDF document text
    • https://cdn.sqhk.co/keximovib/ddK6PyF/daddy_long_legs_book_common_sense_media.pdfIn PDF document text
    • https://cdn.sqhk.co/dexediwiboze/Dddjh2g/park_it_in_the_market_greenwich.pdfIn PDF document text
    • https://tagakokiginozol.weebly.com/uploads/1/3/0/7/130775172/3cc61c169.pdfIn PDF document text
    • https://cdn.sqhk.co/nafusomo/hjidjhT/car_racer_game_download_for_pc.pdfIn PDF document text
    • http://pochta-24.cc/zogelavaxajafar0sfv2.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/hhthfsj/best_video_call_dating_app_free.pdfIn PDF document text
    • https://rulozakowix.weebly.com/uploads/1/3/4/7/134730123/7614e171fa9.pdfIn PDF document text
    • https://rufudejipuxege.weebly.com/uploads/1/3/5/3/135347647/14e7f1a85ff9bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4baf026-79aa-422a-98d1-792187709c05/cuanto_es_2_1_4_pulgadas_en_cm.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_bdc5b157515440cd83aa63ca85fdcffb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/76752524-dbf6-48b8-ab47-9861bc900550/womadagotegeje.pdfIn PDF document text
    • https://b5c90759-dbf8-4ccd-b12d-e23c958527f9.filesusr.com/ugd/915a55_7288ef9c097448c3b1e85574637c6566.pdf?index=trueIn PDF document text
    • https://28a90398-13b1-4b58-b54c-ed045a6bddf2.filesusr.com/ugd/7e9e1f_667362ab2ad54345b95b8869d2990885.pdf?index=trueIn PDF document text
    • https://52c77544-2eb8-427c-ad0e-a8a7e2ea9366.filesusr.com/ugd/93288f_3fdebf6126864d0fba2f13b379ed9011.pdf?index=trueIn PDF document text
    • https://d3dd75b0-514a-4dbf-a1f7-973a5b421fb1.filesusr.com/ugd/5b46ec_ca66e9f1f8f4477ea5daa4505b6a210a.pdf?index=trueIn 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_off0000ffcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCF 5536 bytes
SHA-256: f1d970f916fb4b220cccea3a4a2fd87d7fb43eb0cec9ab734e0018ea865242e1
font_01_sfnt_off0001128a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128A 10880 bytes
SHA-256: 90dbe080fa4f7895feb6353c358977e5848c24e8e7454869dbf6a1da93cf5d6d

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