Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e30c0b88db3f23…

MALICIOUS

PDF

74.6 KB Created: 2021-03-15 06:58:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1de55d74e3282944433df886b42a1dae SHA-1: c9479460c8b90efeb0e5a0a24be202b3e7e82f4a SHA-256: 02e30c0b88db3f237989c711d9cc685f7b0c65c8777b785cde4da601bb50631b
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The PDF contains a large number of external links, suggesting it is part of a link farm designed to distribute malicious content or facilitate phishing. The primary malicious URL identified is https://maypoin.ru/wix?keyword=manual+de+psiconautica+pdf, which is likely used to redirect users to further malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=manual+de+psiconautica+pdf
    • https://nexawukuvinu.weebly.com/uploads/1/3/4/5/134578226/dijitis.pdf
    • https://suripukizoj.weebly.com/uploads/1/3/6/0/136089511/jexuremavojevep.pdf
    • https://fibupodofakakov.weebly.com/uploads/1/3/4/4/134496100/pupekinix.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_762c6e41e7054f4299470ec131056c76.pdf?index=true
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_f1b51677058a47f7947a1e3da51ebe1c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/832a68a0-b152-4e16-8308-56e845b32be0/reviv.pdf
    • http://febuzoremasovev.epizy.com/podopifasidaxo.pdf
    • https://0a497e50-07dd-462d-832d-d8678f741a8e.filesusr.com/ugd/5f857b_8da612c23f054c8a802fa34cbef5ab77.pdf?index=true
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_c83ae5008f384b1e801b77253c0f05c0.pdf?index=true
    • https://09d56968-2ae9-412d-ad86-e67dc63a1c23.filesusr.com/ugd/e8b91f_0fd3e32149184c05b6aacbe4da10ca9f.pdf?index=true
    • https://95e354e6-8561-4e52-807b-deb85f3b5fdd.filesusr.com/ugd/ca9b0a_b3aa33b85de242a696f39c1987f889ab.pdf?index=true
    • http://veveliwuw.rf.gd/chrome_installer_free_for_pc.pdf
    • http://mimonutemabase.epizy.com/regedipuzodatafovirefig.pdf
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_335b53214ea349dca040078c3450afab.pdf?index=true
    • https://37976aa0-f55f-47d3-847a-8d185b13ebf6.filesusr.com/ugd/1d6212_18757402e80c4647b63573187b5c1d10.pdf?index=true
    • https://45f61934-b4a1-4335-a9e3-e142d9465b5b.filesusr.com/ugd/0dd040_69037a40f68a41acb7d2a46805a15c2e.pdf?index=true
    • https://ffb80149-315c-4936-8637-e87477b606fc.filesusr.com/ugd/e7410d_2ac61e8e1ed94cf0a9afb993af12fa84.pdf?index=true
    • https://uploads.strikinglycdn.com/files/66e8848c-12a8-477b-8023-983b88e69a46/915651609.pdf
    • https://3ced707c-20bd-49bb-93f1-edb15be4e391.filesusr.com/ugd/e90305_933c3b6225b746048168070d28e51792.pdf?index=true
    • https://38aad9b5-7a72-45b8-ac81-9fe73ce82000.filesusr.com/ugd/08338c_2b2e5a212a8046e195e43646000d644a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3abe0eab-079e-49e2-98f5-7b98442aa2f1/garokitedonazudej.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_off0000e2ae.bin
cc1a103a4b79eaac80a133c696131ade828b7df5cc3415d843a2dab09ce1b69a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AE 5056 bytes
font_01_sfnt_off0000f406.bin
311ae4cb8e3e74f6744fa25e0cabf2a4f99203a0aaac0ce00d02a9a282bfe3ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF406 12096 bytes

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