Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9888787812876de…

MALICIOUS

PDF

34.2 KB Created: 2020-09-20 23:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03ee6f6904625b0058043281d817c5dd SHA-1: eb3de94c91a2771d63b31f3172c686b84301a1da SHA-256: f9888787812876dee3cbe4d3165669fa2b8221fdd1c0261f0f937f5a1a2d086b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Imagenes de Naruto' and includes the malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. The ML classifier also strongly indicated maliciousness.

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.ru/wb?keyword=imagenes%20de%20naruto In PDF document text
    • http://fobasi.dctrombone.com/uploads/1/3/1/1/131163763/87910f.pdfIn PDF document text
    • http://files.kenziescakesandmore.com/uploads/1/3/0/8/130874257/ganifupexopitenu.pdfIn PDF document text
    • http://files.noahsarkquarryville.com/uploads/1/3/1/3/131383924/gaxosatel_bizufodalug_vukupuxemazof.pdfIn PDF document text
    • http://xalag.care-cornell.com/uploads/1/3/1/4/131454093/0a4294df.pdfIn PDF document text
    • http://todepapek.stjamesstjames.org/uploads/1/3/0/7/130775990/9f6b265e0c4.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/1/0434/2503/8497/files/relative_clauses_exercise_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/59294410958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zigomotixiwututorevibalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/22097798409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0115/9575/files/97717220579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6251/6122/files/81900755334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3940/7519/files/1655204946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5940/4191/files/getuwitinewidage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5335/8999/files/37095192711.pdfIn PDF document text
    • https://e50f08b1-0155-4a5f-ba1e-436112a08d30.filesusr.com/ugd/f80014_c3c93f2fdb5b49c7a529965b96b83ec3.pdf?index=trueIn PDF document text
    • https://ac5c5f74-dff9-4a77-8245-def9ad069ad5.filesusr.com/ugd/a37a2e_5da3cc6666b74055b071347e67b684a6.pdf?index=trueIn 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: noahsarkquarryville.com 4 samples

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_off0000492a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492A 5052 bytes
SHA-256: 2a12d50030816c7659127f1d97ceafa9d793eb50756b871b16aec2c6cf7f4b62
font_01_sfnt_off00005a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A38 9944 bytes
SHA-256: 61799e10c6ec323db3250818d6a6d875756da93d7eb8d558bb8c678e1eac0ead

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