Malicious PDF — malware analysis report

Static analysis result for SHA-256 c247e78ef3af8b55…

MALICIOUS

PDF

41.1 KB Created: 2020-08-18 20:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 200a68fecf39d694b527ffcd03a2b49c SHA-1: 6d721a29130c3c734bb029d4e67ba297bc2d1119 SHA-256: c247e78ef3af8b557661d238b18760980f9f7e46d38401c4d92f9739a9ae1ebb
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though garbled, contains text related to the linked URL, suggesting a lure. The primary malicious URL is https://ttraff.cc/pify?keyword=android+notification+sounds+through+bluetooth, which is likely used to redirect the user to further malicious content.

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=android+notification+sounds+through+bluetooth In PDF document text
    • http://files.bayshoreallergy.com/uploads/1/3/1/1/131163723/9771015618af5.pdfIn PDF document text
    • http://dopir.myguttellsme.com/uploads/1/3/1/6/131637136/4781f65.pdfIn PDF document text
    • http://files.scunthorpecoopjuniorchoir.org.uk/uploads/1/3/0/9/130969472/mesazajuvilesi.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/1/0435/2147/4714/files/google_excel_sheet_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7705/6165/files/zowariwikodexedilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/97979005094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/80525379849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3386/1018/files/10337227353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9770/1032/files/jemibeborinugujejuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7613/2774/files/gobomatamorosama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1977/8720/files/adobe_photoshop_cs2_complete_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1108/7259/files/clash_of_clans_apk_indir_son_srm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/89885811487.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_off00006366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6366 5412 bytes
SHA-256: 034501080a3e41ce0f931a76e3b2f07af44f972e2356db7325cc9c36e59cb836
font_01_sfnt_off000075bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BC 9928 bytes
SHA-256: 4369760af5de7dd813a528d85e1b2e2cd1148585d14072259aa227b9afe6c977

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