Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ffb8a8d10b853b…

MALICIOUS

PDF

49.1 KB Created: 2020-10-05 00:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 24ecee3761df28a2603480c76a9e64fb SHA-1: 50dbb7f283342e5138f235c8ac947c7595cbdc49 SHA-256: 32ffb8a8d10b853b5a5e8d02133142b11858ec6487bf0fe205a54cd9109a1a01
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://ttraff.link/pify?keyword=age+of+wushu+dynasty+hack+apk In PDF document text
    • http://mamuzu.chaletretreatministries.org/uploads/1/3/2/6/132682076/winokipix.pdfIn PDF document text
    • http://files.christianusa.org/uploads/1/3/1/3/131384359/tomujiroka-ludezafowiku-zogezamexenazo-jirapo.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/267ba996-264c-429c-98b0-0203511f0fa7/99696274246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ecbc848-ec79-4fd8-a3dc-89dfc8698ae5/lebepaxamatarefoba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e939bb1b-54a6-44b3-a37c-768ac2a77e88/16281968642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5489dcb-ef70-4ff1-9ed0-4bd64947bf3c/mirupinabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16b2a2e9-390b-4250-8064-a725bbfd3349/60547593050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc71d5e3-d4ce-48c4-bd1f-1f0fdb4eff99/97525386869.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f9d087f-1430-472d-a65c-b37aebd25fec/44433355129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b1cb8e0-79e3-475e-924f-b3f7a683ba82/tewiwomefesudiporaburamiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3982486e-65d1-4577-8233-922aa5c72942/30429658827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8c4fed0-2571-41dd-8b03-94dffc8df2e3/buwojoxunegexaku.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7549 2960 bytes
SHA-256: d8ef148c594adba1946aa7d95f188f3f33f69c77bc22762a1a4a57bcfd89a796
font_01_sfnt_off00007fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCB 5536 bytes
SHA-256: a9c3f3b79e56c94e5093e41e28bb685a2f53f5b98d71c2264ce08e86b75f4a75
font_02_sfnt_off000092c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C6 10740 bytes
SHA-256: 7c8d1f0203a3d4c2bb495a7532f65143451150214e8d8177ef8fe0fb1e1a6b15

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