Malicious PDF — malware analysis report

Static analysis result for SHA-256 deff272d7b1c7f57…

MALICIOUS

PDF

51.9 KB Created: 2020-11-04 07:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 44e8089e9f06531ca1db4db234404d83 SHA-1: 22c95c3fdb67aa6782649e20a3267282048b44fe SHA-256: deff272d7b1c7f577370e9f1994b7f175737a6d4832b037b7017ab1ad09e40fd
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.me/123?keyword=women+s+slip+on+shoes+for+winter In PDF document text
    • https://nelovemisero.weebly.com/uploads/1/3/4/3/134347795/masut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_5fa20f84c9ecb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424009/normal_5f98584787185.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/7228223.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/dc8ca6fe-2f75-45c4-a2ca-c37bde961564/35135607711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b9a665f-5b47-4cfe-926e-d8f938fb0fa7/81228692835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3370d9b0-c3b4-4638-868f-abd22b50fe6f/50684352986.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/skyrim_blessings_of_nature_lost_maurice.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/maus_1_and_2_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/vertex_formula_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/62551329172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b69a233b-fdea-4ad7-8b44-33c7f5656a46/88475167206.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/mewasomutazoraton.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/sri_rudram_namakam_chamakam_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7e5eec2-d543-48e3-bebd-4c979ed77826/gexugulivokekibego.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7852 5036 bytes
SHA-256: 9b82e3ad7277300495cd6667e765976d219b4124a8472ac19a19dc34141026e8
font_01_sfnt_off00008962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8962 10548 bytes
SHA-256: 56ff150adbef735a16da77a5841dd820ca5c4cdf5dbc95038675adb6105b58f6
font_02_sfnt_off0000adaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADAF 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

Open this report in the interactive analyzer, or submit your own file for analysis.