Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f0697617ce8622…

MALICIOUS

PDF

49.6 KB Created: 2020-10-14 18:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 42b214cee39a7a678ec79fcc25c1eb2a SHA-1: 13b010298b1ffe9e994c6b637a2d0a9fb5fd8c10 SHA-256: a6f0697617ce86224f830313f7a8ca2abf695510ef5adaeb45dff5edb24c9dc3
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=medicaid+income+guidelines+colorado+2020 In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/6431815.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/a8401ec7a9859.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/c25f730.pdfIn PDF document text
    • https://site-1048186.mozfiles.com/files/1048186/jokewimizujedomorovo.pdfIn PDF document text
    • https://site-1039275.mozfiles.com/files/1039275/81038125651.pdfIn PDF document text
    • https://site-1042502.mozfiles.com/files/1042502/wufiwibi.pdfIn PDF document text
    • https://site-1048530.mozfiles.com/files/1048530/44005531102.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/1302795.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/kizerapu.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8742796.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/36ce75ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1176/4135/files/gamedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9889/0147/files/scale_drawings_and_models_worksheet_answers_7-7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3880/1063/files/gaforajavaveru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b837c8c7-d84e-4979-b493-4b89344af2d2/47761469288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/923fc687-268d-4d13-a360-2210e83f98ae/koxirubavemanotijegeweveb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f2af53-60b0-45fe-a544-ac53bacb7333/86221638124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35cbbaf5-186b-4218-8b94-6e55c1e8b3ed/fuvesugarovokipezux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8463/6320/files/mega_man_x3_final_boss_weakness.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0242/7554/files/22714350176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8696/5672/files/62277733171.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_off000074c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C6 5340 bytes
SHA-256: 841388d5a5bc885ab5b69b08ac9156bc24a3058dd0ccd34ac6f7f024b1e8f63a
font_01_sfnt_off000086bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BD 10484 bytes
SHA-256: f95af8e73f62df084f235cff629fbc6e3e3d154651892bad6fb59378fd620adf
font_02_sfnt_off0000aa8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA8F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34