Malicious PDF — malware analysis report

Static analysis result for SHA-256 929f25ad3fb8d0b3…

MALICIOUS

PDF

42.6 KB Created: 2020-11-08 05:34:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c031588c4cce4a14e1aad49a8bb45fd9 SHA-1: f137cc4cdc4973eb2b7c07126c9ba27bd8772e7a SHA-256: 929f25ad3fb8d0b3b9645b57227ea330cb82b0db2562af8a8116dcc8e313fdc4
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffmen.ru/aws?keyword=uncontrolled+obstacles+can+result+in In PDF document text
    • https://noxetetejiv.weebly.com/uploads/1/3/4/3/134391164/retirage_xavuge_basemododadepa_revujufafupo.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/c9c5f43.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/9183887.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/f76c8762-efa5-476d-98a1-53ffbc211cad/seloc_marine_repair_manual_1301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6779145e-f229-40b0-bcff-cd9a131b9700/45517282603.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/cornelia_funke_tintenherz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1851f058-2ae6-4c27-89fb-123ecf19663f/62244484153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b2daeba-b03c-4621-9512-de053f85cbec/xinopediwusez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e06462fe-b765-4517-b20f-6936aa3f4291/cuny_catw_sample_essays.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85f58fef-3a8b-4584-b34e-8e4f6c3d9e6a/feponivisefunanaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd2d943e-d894-46cf-9706-1f57086b7271/mixasisejelo.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_off00006abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABF 5064 bytes
SHA-256: 7d3a4bdcd84aed7ef5897c28c596aa021695357d4b2e3b58d274acdb1120e158
font_01_sfnt_off00007bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFC 9924 bytes
SHA-256: 3f5ba2992855e9fe2044e8066d98411451768fcc76a1e5e7b87c3879d61fe30c