Malicious PDF — malware analysis report

Static analysis result for SHA-256 387c3d9be3ffb32b…

MALICIOUS

PDF

45.2 KB Created: 2020-10-31 09:00:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 5b7204da8a970957bc117c3c21f19d27 SHA-1: 0b9b498d8a5f6d050613be5e299cc962e19e8f57 SHA-256: 387c3d9be3ffb32b2d55229f545c3fbcaa7a262de3d7e3132d3509f89c45a987
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://cctraff.ru/aws?keyword=ikea+ektorp+sofa+cover In PDF document text
    • https://lakujasoramaw.weebly.com/uploads/1/3/4/4/134400634/wisari_tebutuxexumela_silujatojijuja.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/d61fb1165acf1f5.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006f46.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006f46.bin)
    • https://cdn.shopify.com/s/files/1/0504/2621/6635/files/36183209578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6414/6073/files/97687940303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7972/8796/files/rjenik_simbola_chevalier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2652/1496/files/74641352659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6679/2357/files/vidmate_apk_versi_terbaru_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6573/6853/files/form_15g_filled_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7928/5915/files/91825039112.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/wipepi.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/kowalusoxigixavixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6679/2357/files/thule_swing_away_bike_rack_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8997/2385/files/kotor_attributes_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/69692318915.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 extracted file (font_00_sfnt_off00006f46.bin)

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_off00006f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F46 5040 bytes
SHA-256: 2c14aa929cf1f335e2aea11cfad58e366b0d7223a0fdb90bcfefbfe8dc355f63
font_01_sfnt_off0000808b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808B 11976 bytes
SHA-256: 56d18c59cd76c029d18f0361457c76c3075c92fb74c4531916d32fcd5c882673

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