Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5f6853aa099f05…

MALICIOUS

PDF

71.3 KB Created: 2020-12-31 02:21:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 6f65ff6573fbfc555af29875ae070e29 SHA-1: e09f2e20163faacf29220da644c3972f18dfb836 SHA-256: 7e5f6853aa099f05e5fa421123a420add0dc472de07a588a138b4f742adf825a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafftec.ru/123?utm_term=how+to+change+eyes+colour+in+photoshop PDF link annotation
    • https://buzazimuz.weebly.com/uploads/1/3/2/3/132302772/foramoweji.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/2059225.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mokamoba/nugimaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bddedea9-90af-4eb2-aeb9-9b710479c2d7/fapovozopi.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/babylon_dictionary_english_to_arabic.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/vukef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86bec4af-9e40-4853-84f5-53fde54b4272/91222005276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba6356ef-812c-4e1b-ad43-5e3e99bdbdfd/nugotigugivewugosufuji.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/dawasebezuzitipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f347ea8c-0ead-44e2-b94b-63f6d58ed938/the_crucible_red_scare_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d58f47-11a5-420a-af81-d8ed6985b5f7/f2p_99_crafting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/43846414927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f8d046-74b0-4423-b930-58126ed36c14/best_sniper_class_borderlands_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d201067-0a1b-4423-9d26-ab0b16f074a4/what_is_google_docs_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d3bd30b-adca-494d-81c2-05c1e9703985/27745490227.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_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 5352 bytes
SHA-256: 9f5dea026ca0c964fe2b8c0af1ec58a2ee75746c9ecea6873106d2df94f2fd8b
font_01_sfnt_off0000ec43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC43 10632 bytes
SHA-256: e052db609cd3326c2273338874c71358aef92849ac3f203c42b3c87efb5633fa

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