Malicious PDF — malware analysis report

Static analysis result for SHA-256 49732e732045317a…

MALICIOUS

PDF

78.2 KB Created: 2021-03-28 08:05:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 68aa4300bf8680a0fb3de8205df082f7 SHA-1: 5bbff294206e33740fe7a0a20a8cd833e7e7b385 SHA-256: 49732e732045317ae9eedef80f6e0d5ca2eb709cddd95996b0319c2f0d92999b
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 0.9992

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://midufefew.ru/strik?utm_term=weight+lifting+program+for+beginners PDF link annotation
    • http://instas.site/14827599385o1abs.pdfIn PDF document text
    • http://tihefers.online/94350059234rupu9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392470/normal_6034f80b5e6ab.pdfIn PDF document text
    • http://garderob-podolsk.ru/26677190113h45gj.pdfIn PDF document text
    • http://jisutuxoxaza.medianewsonline.com/mugon.pdfIn PDF document text
    • http://romeital.space/mozadixakalunumx475z.pdfIn PDF document text
    • http://goodnatural.space/quran_tilawat_full_30_para_with_urdu_translation_mp3_downloadvux1p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404523/normal_5fe9c6622fd65.pdfIn PDF document text
    • http://slamelina.website/57237284172jfd7u.pdfIn PDF document text
    • http://wapadax.scienceontheweb.net/rufadepele.pdfIn PDF document text
    • http://meetporte.xyz/bobazapoderagapovyu4gs.pdfIn PDF document text
    • http://wekeb.space/93425612227zdgx5.pdfIn PDF document text
    • http://kersita.space/44903411867alhdq.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/6dab13ad-f5b8-49c5-93a0-94fb5d3c7ceb/gotiparajagasimositor.pdfIn PDF document text
    • https://6440a9f6-5e82-4153-977b-4ffe9374ec4a.filesusr.com/ugd/7182f3_f295791cc20d4dbe8967b6b7508d42ad.pdf?index=trueIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_e26a57eac2b44a79964f0da17a3e1c32.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbc60251-a2f9-4cc4-a07d-ca6cbf23a66b/blackpink_ice_cream_song_photos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f8acedf-9f36-40b9-ad43-ddc4cc8d4910/do_therapists_read_body_language.pdfIn PDF document text
    • http://xuvuzonixo.onlinewebshop.net/39372008374.pdfIn PDF document text
    • https://041c2bdd-267b-4995-9d72-d071cf2c2b2b.filesusr.com/ugd/ba0b69_933c9eccfbd94380be42b1004a597ed3.pdf?index=trueIn PDF document text
    • https://d6aab468-caab-4d9e-910f-d3bf64ae4104.filesusr.com/ugd/5438e3_e7f392cd44c14175bc1ed5c7909fa961.pdf?index=trueIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/11114078992.pdfIn PDF document text
    • https://b6e49935-6d58-4bde-831f-6e0b746776d3.filesusr.com/ugd/7d321f_b3782610ec0a4a44a4a8c2ea9d80f456.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a1e22cc-2924-4156-985d-139f25134416/char-broil_electric_bistro_infrared_bbq_reviews.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_off0000f382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF382 5468 bytes
SHA-256: 7629ddc5757cbf4587200c3ccd175c7f84713349dd7488ca56dc409e24e7f6d2
font_01_sfnt_off00010600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10600 10392 bytes
SHA-256: e90efde248dfe811a2e72a1350d8eb708f5dfcbdee8ac3faf68ad19af4823b08

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