Malicious PDF — malware analysis report

Static analysis result for SHA-256 39827352fbc2a525…

MALICIOUS

PDF

44.8 KB Created: 2020-10-30 09:55:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: e5ac8eb260d65776f8fe982a54e78bd3 SHA-1: 040c08a77a6dfa54c6a7094b1edbc749f48d9f97 SHA-256: 39827352fbc2a52524d62a1a4b7ebddc1a3ca0239854b0597a0eb47a8fddafad
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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://pawuxadatunu.weebly.com/uploads/1/3/4/2/134266652/jobajusekuri.pdf.
  • 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://cctraff.ru/aws?keyword=best+ticket+selling+site In PDF document text
    • https://pawuxadatunu.weebly.com/uploads/1/3/4/2/134266652/jobajusekuri.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/63a641d1-bb05-4cfc-8515-0eca22c5ffa6/nibanozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/4531/9333/files/business_strategy_case_studies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7853/1255/files/nodirumafizam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2669/2265/files/cisco_aci_design_guide_3.2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9412de38-5288-476e-b925-45856532a308/12304198958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ba66d2d-e2d8-46f8-935f-3ddde3203d40/popukararulagidobaloj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e62e7ec-6976-4e3a-a341-c7aa1ac58290/vijikusulizozizabazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4238/9159/files/apologia_pro_vita_sua_newman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2412/2524/files/51429496104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/9731/9333/files/word_whizzle_famous_boxers_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/8596/3940/files/merijajiwerenate.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BC 4772 bytes
SHA-256: 2c0c1f51f3c14e9eb96d71eb660cdf95510ce565670e05912f398dee703c571d
font_01_sfnt_off0000831f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831F 10460 bytes
SHA-256: 48fe229d3d97f26735f6df771df80213ef7ec8ecc9be413ca09ebe5d77f7e8c5

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