Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e56c2237f33c697…

MALICIOUS

PDF

59.8 KB Created: 2020-10-02 16:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ed13d543f12bb5bd09772b195af1584c SHA-1: 85d83e77c9a3453e6323cd8a03d56405a16bc0c2 SHA-256: 7e56c2237f33c69764df92335a5e76068de4c45082bf38715726375a57805563
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/pify?keyword=saturday+translate+in+japanese In PDF document text
    • http://files.rossmoorcreeksidegrill.com/uploads/1/3/2/7/132740778/kuvedorebew-wurudifalunatak-nanugume.pdfIn PDF document text
    • http://nizomu.hellovetmed.com/uploads/1/3/2/6/132683078/xolevodes_tugumoruxatat_viwegixoz_xovubo.pdfIn PDF document text
    • http://gotebomed.megjordanart.com/uploads/1/3/0/8/130874482/9798075.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8605/2504/files/responding_hamlet_act_1_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6119/0559/files/wakutejubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7376/3496/files/vewenisenunumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6610/9335/files/mcgraw_hill_geometry_workbook_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4717992-e00a-47a5-9039-2556a578a6c8/zabojarupogasijir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3038bb9b-8d29-42ae-b5c8-be43e3f0f24e/60608267926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdae206e-2cae-4444-aaab-ab357badcaf1/kukonunadujiwutufemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f3b73a3-5c62-47ea-8eab-feb999b112b7/28990618191.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc336f04-d6c4-4cbb-b7ee-6d3ac682b8fb/89802269303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7693/5070/files/60v_dewalt_battery_charger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9303/files/getediba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1911/6449/files/75731975801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0918/2365/files/sunset_blvd_script.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7D 19012 bytes
SHA-256: 05ebc716484792a73aa5a6e919d888269fc13b410f3074d60dc84962e1cbe1a7
font_01_sfnt_off0000aaa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAA2 5236 bytes
SHA-256: c4c8132f8ec2ec5332fd6ed3117ba82d7fad4b12a5b88078e378bd42defc8014
font_02_sfnt_off0000bc88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC88 11596 bytes
SHA-256: 9545fc7c2c927fc7a35e4ca84d9c32fae3911a9e9c575d49a45372027f1da3d5

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