Malicious PDF — malware analysis report

Static analysis result for SHA-256 710b45a4afd1b7e5…

MALICIOUS

PDF

44.4 KB Created: 2020-10-17 06:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d4975e2bdfb606ce03586fc3f4f7f0ca SHA-1: 92e660e617bbe61e9fd870859a94b3f4cafce61f SHA-256: 710b45a4afd1b7e572c21a00affc953097190c9b34b0fd379466c73e690ec2ed
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=monster+superstar+backfloat+reviews In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5f87382af1a88.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/barasubolu_delawarowewolez.pdfIn PDF document text
    • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/5542985.pdfIn PDF document text
    • https://tikedamo.weebly.com/uploads/1/3/1/4/131453682/kaxumuburutijexu.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/bitunanubanixuwisor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f2cc4ee-ba67-4df4-b73d-0391b37b5ddb/sazumodumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cacc0246-4d09-42b5-b984-c1c8c9e51866/21715185402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/634d079c-65a6-4ed2-9710-6c4bab489dbd/11739037752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27c19473-9575-4859-b97d-9292cddd69fd/gizebafavudozuma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad3fba7a-b213-4dc5-9210-f3b8ffc80958/60295205515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/9267/2157/files/gidipexefededizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3362/0380/files/52953461948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8077/7373/files/dalegiseru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/27_piece_weave_styles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1128/2840/files/27625109320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8982/6470/files/difference_between_plant_and_animal_cells_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6493/1992/files/samsung_galaxy_s10_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8720/2971/files/jezekajebufori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2103/6452/files/27773818947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5284/6234/files/ohio_innocence_project_current_cases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/prodigy_brake_controller_instructions.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_off00006df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF5 5368 bytes
SHA-256: 2dadb13780705b25730c9a802f426ac01809cf1dae3a7e64ae4e6c68ae1348a0
font_01_sfnt_off00008065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8065 10432 bytes
SHA-256: 2d3fb7b35508d704bd548369048347dfb66ca9a6164397cb463279e6578d89fd

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