Malicious PDF — malware analysis report

Static analysis result for SHA-256 419888c141c66139…

MALICIOUS

PDF

82.8 KB Created: 2021-03-26 05:29:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bb679b00525d37084414af63f56a99f7 SHA-1: 9cb456da26730f6608266879c63d5a2b5508618a SHA-256: 419888c141c6613972606c65fd18d7b7d270ebfc7900f5707e09a8541450ea8f
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 0.9997

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://jottigo.ru/strik?utm_term=bobbi+brown+jones+road+makeup+line PDF link annotation
    • https://cdn.sqhk.co/mudinaxape/Sjjqpp4/movies_coming_out_in_october_2020_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478688/normal_604a02e1d5819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415052/normal_602b1396449dd.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/paluzemarewabirujoxu.pdfIn PDF document text
    • http://gasurorir.sportsontheweb.net/aperture_chart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387718/normal_605c0129e045f.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/uiiYheF/85361163642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452863/normal_6054d3fb870ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489240/normal_605529b301614.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492897/normal_6001c73d120b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469640/normal_5ff76452ea1b1.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/la_la_land_guitar_tab_city_of_stars.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://satogitexuvo.myartsonline.com/banejiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6352e02d-169e-48bb-8476-859c4d364225/vujumodogemekibev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eca49d9a-220d-4d1b-a907-75388933e663/wildgame_innovations_terra_extreme_14mp_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/96230160563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/404fb087-7382-46c4-9028-ce593af16b5b/27515220551.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/body_for_life_workout_routine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a678f044-01be-498a-bd6b-815adc5dd168/does_walmart_sell_tracfone_minutes.pdfIn PDF document text
    • http://livirava.atwebpages.com/gegifogoselasagivip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60f53e90-af8b-4496-a1f1-e86e336a5ab2/is_final_fantasy_vii_remake_coming_to_pc.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_off00010515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10515 5524 bytes
SHA-256: 9c5ff625d2826969a00d94849a81bd53eec83c4ad188f656355eebbdcd2fe633
font_01_sfnt_off000117d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D9 11220 bytes
SHA-256: 5dcdd24798ab7f4ab85fc8e989ff76e3b6ca464e76891cf32ddc2786b4753766

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