Malicious PDF — malware analysis report

Static analysis result for SHA-256 1677c9f339707303…

MALICIOUS

PDF

40.1 KB Created: 2020-08-17 09:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97f9fa24491f5f0803c54b529225b629 SHA-1: f6f58618fee0db169796731b9bdc86c56b51ae1e SHA-256: 1677c9f339707303d00527de48116c3eec26a6b04d07a82fda7e98fb6633b9b1
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though heavily obfuscated, contains a URL that appears to be a lure for an 'Illinois state police accident report form'. This suggests a phishing attempt to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.cc/pify?keyword=illinois+state+police+accident+report+form In PDF document text
    • http://rudawoj.rlbciviccenter.com/uploads/1/3/1/4/131437089/2798543.pdfIn PDF document text
    • http://files.ukprestigeproducts.com/uploads/1/3/1/3/131398194/gosisobaj-ludufanumex-wiburonesiti-vewabovuti.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/1/0431/3228/9175/files/34733270782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/best_of_anuradha_paudwal_chhath_geet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/24092743641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/femupuguvoromexus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/79110335356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/download_photobucket_album_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/english_dictionary_for_java_mobile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/system_dynamics_palm_3rd_edition_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/82476505256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2951/8741/files/lijixujeguwokorun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/pades.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3754/6917/files/rosidubewuvewafuwerafurup.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 6

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_off00005c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3C 5236 bytes
SHA-256: eb8d26d6a36a28471675e965c488a6259cce784b9840b9f3adc8cb9fa8d02d4f
font_01_sfnt_off00006ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DED 11076 bytes
SHA-256: 8598dbeb80c11992cd68782776ffb1d5999185ec76b9024f1847ad4636796f93

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