Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0806c912874db25…

MALICIOUS

PDF

101.3 KB Created: 2021-03-21 00:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33e070285cff01c968a352aefd2fefb3 SHA-1: 188a483186152fa48e0bed99a8b1783025687272 SHA-256: e0806c912874db2541a0626d2a27553a272de145fc6a7a98c5af8140c47d1322
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a tactic to drive traffic to potentially malicious or deceptive websites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of numerous external URIs points towards an attack pattern involving redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/award?keyword=paradise+lost+book+iv+summary+pdf
    • https://bisigategisabuv.weebly.com/uploads/1/3/4/8/134884720/7290531.pdf
    • https://cdn.sqhk.co/fufigavaki/Qhiohgc/golden_bubble_sort_expert_level_46.pdf
    • https://cdn.sqhk.co/baresupujar/Vhd5b4g/13819121052.pdf
    • http://bagomebefekixob.getenjoyment.net/32216398240.pdf
    • https://cdn.sqhk.co/perikowep/hhhdeha/classic_car_city_racing_3d_model.pdf
    • https://sopunarexij.weebly.com/uploads/1/3/1/8/131857112/2694a25555eb8b5.pdf
    • https://lotaximadezepa.weebly.com/uploads/1/3/1/3/131379514/webopel.pdf
    • http://kivolugog.mypressonline.com/nirozosisizosow.pdf
    • http://zarewubizeno.mywebcommunity.org/shadows_over_bogenhafen_cosmetics.pdf
    • http://japuxivofag.22web.org/15881582044.pdf
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/6551015.pdf
    • https://cdn.sqhk.co/nadetajagupe/Fp4Qgcl/free_printable_barbie_coloring_sheets.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://011f98f8-b45f-4578-a2fd-466b530f7845.filesusr.com/ugd/74e905_9342850c286342dbafe35472fa6d0cd9.pdf?index=true
    • https://s3.amazonaws.com/dazovosugev/jemadodinojideporipuk.pdf
    • http://rogomore.myartsonline.com/introductory_oceanography.pdf
    • https://c36efdde-2309-4ce2-a10d-b6df2ce12cd8.filesusr.com/ugd/e98059_f5a39d87ddfb431f9f673b5ac737ac71.pdf?index=true
    • https://f8d82b49-d438-4da2-b906-f876cb6fe635.filesusr.com/ugd/12dc78_d728e6c8d49f43a29f728a860fd1dec9.pdf?index=true
    • https://d115d978-d96a-40c8-9764-5d959708fc35.filesusr.com/ugd/436160_54468a9e620849999552040e87e477c3.pdf?index=true
    • http://jasunusemoki.onlinewebshop.net/17662038056.pdf
    • http://suvokejixu.epizy.com/fanurozogevilalamodidamu.pdf
    • https://s3.amazonaws.com/neviwove/salejegowiboxojokepude.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015016.bin
ee1f70f64691307ada8b2ab913b9177ae620e13dded05c32847f696633995edd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15016 5556 bytes
font_01_sfnt_off000162eb.bin
832af74d664e0012a7363ab0dc312b37901a11176e1dbed98f92557ae7f35733		 pdf-font-stream PDF embedded font (sfnt) at offset 0x162EB 10812 bytes

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