Malicious PDF — malware analysis report

Static analysis result for SHA-256 715250808589c5ab…

MALICIOUS

PDF

45.0 KB Created: 2020-08-20 03:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f4498dd7a4cd3994f57db4e7d003026 SHA-1: bd5fb8a0ebb05cc11af63824c286284decc3144a SHA-256: 715250808589c5abac641e58a12c6fc21ba5a7d5f9e235cc55ab698815479de4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was identified as malicious by an ML classifier and contains multiple heuristics indicating malicious intent. It functions as a link farm, embedding numerous URLs that point to a redirector service, specifically 'https://ttraff.ru/pify?keyword=desoto+water+quality+report'. The document's content, though appearing as a water quality report, is a lure to encourage users to click these links, which likely lead to further malicious content or phishing pages.

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/pify?keyword=desoto+water+quality+report In PDF document text
    • http://files.castlewoodclays.com/uploads/1/3/0/8/130873907/b18a71fa7bc6.pdfIn PDF document text
    • http://files.laserquestbournemouth.co.uk/uploads/1/3/1/8/131857334/lifopurub_latatowisasujat_jobazepipaka.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/1/0434/6737/4758/files/joxevikakedudokanodimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/83562984584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/agni_natchathiram_video_songs_hd_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8371/0108/files/50755715841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5404/7138/files/zexamefan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31995481059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3342/0199/files/juluzonedejew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/pdf_file_to_word_doc_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5686/5173/files/cercle_de_la_forme_chatillon_horaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5395/4725/files/ic_cd4011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1280/6040/files/ff12_gambits_guide.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 8

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_off0000740c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740C 5132 bytes
SHA-256: 35c2caf37c99dbd32958c44eae50a98504b64371da54a77ee70a51c740eb120e
font_01_sfnt_off000085b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B1 9820 bytes
SHA-256: de592c7728fa76c48b69e48a0f65eec00a4f5be65a55b3adf3ada8dad943ca5f

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