Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a4e1f33aa087d51…

MALICIOUS

PDF

54.3 KB Created: 2020-08-20 09:20:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e2e9aa0ef1fbb8ccce1bdecaab3fb12f SHA-1: 8ce1136db9138b0073b431a834762e21435e60d9 SHA-256: 6a4e1f33aa087d51ae487f4a898d4e8ca6bbe7172541ce4318672adab566e39b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service known for malicious activity. The ML classifier strongly indicated maliciousness, and the document body, though partially corrupted, includes the primary malicious URL. The presence of embedded links and the redirector URL suggest an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

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.com/pify?keyword=coliformes+totaux+dans+l%2527+eau+potable In PDF document text
    • http://feruga.rayslicenseplates.com/uploads/1/3/0/8/130874277/e01880c47c9580.pdfIn PDF document text
    • http://files.milleratcree.org/uploads/1/3/0/9/130968988/3523865.pdfIn PDF document text
    • http://dogok.rockyridgeacres.org/uploads/1/3/0/7/130739695/7672107.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/allelopathy_research_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7610/8956/files/55731906588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9979/1268/files/rules_for_a_discord_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4899/1910/files/exercices_sur_l_accord_du_participe_pass_avec_avoir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4501/1112/files/the_exorcist_tv_show_episode_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/jotatew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7356/8919/files/virixerenodanuvopixun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2845/4298/files/monaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3745/7574/files/javascript_format_number_without_decimals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/nubipamumuxobuzafogovosol.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
🗂 Part of campaign: rayslicenseplates.com 4 samples

Related samples 5

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_off000090bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90BD 5336 bytes
SHA-256: aa68cd971aee838be811d95d105ea8f7259029a4a2d2c48e978b96399f5305ef
font_01_sfnt_off0000a2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C7 12684 bytes
SHA-256: 1d07f46fc7c015c8d54eccd66234672f79acbdb609e250f594cabdd5784792eb

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