Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce67f7aa1acd688b…

MALICIOUS

PDF

40.8 KB Created: 2020-11-08 02:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 2b6830493fc97c1184c9ab99c286d854 SHA-1: a37551071c4ac8378046bd0ed912b2b7dc14b281 SHA-256: ce67f7aa1acd688bd115854e71d21592aa18f4b46e5cd1a766697efbba7801d5
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=rural+settlement+patterns+linear PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391317/normal_5f9ced55bbbd2.pdfIn PDF document text
    • https://numibogag.weebly.com/uploads/1/3/4/3/134323011/776bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5f925c28adff6.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/pajaji_tumovupevojene.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368266/normal_5f8a67bee4140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_5f8971860c89c.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/ff09757a-a22b-46d8-85b7-00b1bf85d9c9/baxit.pdfIn PDF document text
    • https://ronesifipule.files.wordpress.com/2020/11/gexinipotemavivabexijib.pdfIn PDF document text
    • https://dadinavamo.files.wordpress.com/2020/11/microcomputers_and_microprocessors_john_uffenbeck.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49a40d6e-4fde-44f5-84bf-3ffe94e19329/29780040074.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd3d2b8e-c843-458a-a186-f5c6c083e265/23726865308.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/tweakbox_apk_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b859e70-2706-4e10-8715-6b1ee3117ea8/mark_tuinei_wife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f3faee1-930b-4d03-ba15-8054d74c6ee7/25786726462.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_off00006270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6270 4972 bytes
SHA-256: 5798b4448758a583ad8f409b935122563a472f0c3ec3eff47a5c37e84d1cfbdd
font_01_sfnt_off0000733f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733F 10404 bytes
SHA-256: 1d592c75f50c9db1f206ff0bbc767a9248161d70ce615d7d057a7792448ef6c4