Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e13d7a1b6b07a6…

MALICIOUS

PDF

70.2 KB Created: 2021-03-04 22:09:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b1ef7220c09df6c3976f79d972582794 SHA-1: e9c5d84bd42740f469e84db40e53fa1c5f5d52c8 SHA-256: 36e13d7a1b6b07a6ee72de95f87cd9ba9e6e6e9c48d7595ffd8a1865f291dca9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/award?keyword=jack+lalanne+power+juicer+express+mt-1020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5feb25c6c5a3b.pdfIn PDF document text
    • http://modernstyle.pro/p226_vs_p229_accuracybfk5t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415322/normal_6038c72903dfa.pdfIn PDF document text
    • http://creditscoretrack.info/la_guerrera_novela_capitulos_completitw8l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390328/normal_5ff97e66d7407.pdfIn PDF document text
    • http://fullhp.info/jump_rope_training_for_weight_loss9lozl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408001/normal_6017741547117.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e1ca4115-fb55-43f9-84f1-eaf814f8c83f.filesusr.com/ugd/18122d_8b2fa25ba8424e4f8ef387a031a79e2c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8b2ca53-4650-4568-bbe1-830f71a4ecc4/how_to_use_dyson_ball_on_carpet.pdfIn PDF document text
    • https://dd3528e8-ded0-4753-843e-0d3cb9f542e7.filesusr.com/ugd/4d6844_8ff1fb6a7112449f8d8e30cadc175313.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/farowug/pepopebodabot.pdfIn PDF document text
    • https://9e730ba1-499c-413e-9a09-8a81f8121270.filesusr.com/ugd/0a0016_9ac3a9e338df4fbe96af3b7a4af99b8e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xojafemori/affichage_obligatoire_acm.pdfIn PDF document text
    • https://ff4d9611-e7ea-45f2-85d3-f0b464ef817f.filesusr.com/ugd/48f461_1b0f0d6fe0024110b7708e6c843d145e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0a2fda-7059-41b3-8c29-8cabe65cb43d/turunesudanawuzan.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/fhlmc_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/game_java_avatar_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bcfa338-38e4-47f0-b8c2-c2c148e4a38a/midawapebesiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/90083097047.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/autoestima_psicologia_comportamentale.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/47667493809.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/wupovedutitetemebe.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_off0000d1fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FE 5724 bytes
SHA-256: 7482c0d0aa4bcdee89ceb0aea488017872e83d91b8c4a31e3a70f7fd1a6bf542
font_01_sfnt_off0000e590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE590 10428 bytes
SHA-256: 044908e864af141b30d511847f87394dde9d02510e2dccee8dc8361a96b7f10a

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