Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1123edcee98ab1…

MALICIOUS

PDF

42.3 KB Created: 2020-10-02 12:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 909b2e39ad52de900340ac84a69f0689 SHA-1: 59a51851d085187e6d66cf430f62c0786d761f7c SHA-256: 0a1123edcee98ab195a79af3b5f83bbb936a506afd6c3a6b759b7ee7edea4bfa
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/strik?keyword=deck+the+halls+easy+piano+sheet+music In PDF document text
    • http://files.balciunaslab.com/uploads/1/3/0/7/130775102/jobesazotov.pdfIn PDF document text
    • http://files.vintagepercussionsoundeffects.com/uploads/1/3/2/6/132682022/4136757.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/525ae76e-1d27-4757-8e28-1b1e8646755d/xotiwuwifavamivu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ba7121-283e-4b53-a439-da00dc8bcc93/22729488877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ea81a0-3354-4ba3-8d00-516786ab8b8c/52325248815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8519/6189/files/galaxy_eyes_dark_matter_dragon_rulings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9529/4101/files/89618442896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1085/files/xovoresobogijajefidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5298/8566/files/gegizekiramogogina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5100633c-e938-4beb-9691-d947f70b5b6d/nolitufifuniki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80ab41e8-b810-4ce8-b622-94ad66d92df9/92243382385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5b14977-e8a8-41e4-92eb-6e333f2ea52d/48412686645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e598c94-725a-4e89-a33e-65d775a77d92/dejib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d71707ab-fe0c-4e93-8f1d-c8ac2d7ee4a6/fulaxidewetevitotovesip.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 2

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_off00006818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6818 5240 bytes
SHA-256: a316bf2bf83eb88fb51d35f31e4160c5b8aa2c4a9e96f8ed64a8c16730d6fc4c
font_01_sfnt_off000079df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79DF 10164 bytes
SHA-256: 2be0dc762a78ff0d7ec1ab7c63847df4b7afcee874b05b98da90b9c927d42651

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