Malicious PDF — malware analysis report

Static analysis result for SHA-256 f482211657b20a30…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 02:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85712493b9878ad8f5eb66e4bdf41cb5 SHA-1: 3ec2babb85fd230dd0ebf4a4e88b64a3688ca703 SHA-256: f482211657b20a30c62657613d2b0c2427a8b692198898d4dad5f9fe78283a0f
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure to download a PDF reader, but the primary link leads to a known malicious redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to obscure the malicious destination. The SE_INVOICE_LURE heuristic suggests a payment or invoice pretext, though the document body text focuses on a PDF reader. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=best+lightweight+pdf+reader+for+android In PDF document text
    • http://files.funcde.com/uploads/1/3/1/0/131070982/5283331.pdfIn PDF document text
    • http://piribag.brynsion.org/uploads/1/3/0/8/130813780/55526e45e2030.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/1/0431/7003/7917/files/duwaporixozus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/pajojafasar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/printable_alphabet_chart_without_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0298/6659/files/kixulaboriju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/59726009201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6165/files/ff14_weaver_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3680/2204/files/fovetemifamozupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4516/2903/files/lexus_is250_repair_manual_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4971/9720/files/the_case_for_christ_lee_strobel_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/77460012949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6148/4437/files/cavitron_scaler_manual.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 3

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_off00006c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3D 5444 bytes
SHA-256: e6407cb9ca7cbcea91d97be1ed47532806e59da3e5cea17e9e66752b971da6c5
font_01_sfnt_off00007ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECE 10196 bytes
SHA-256: 80ed863cf991dff13160f696500344130ad52662e24b47460512b061a8ef577c

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