Malicious PDF — malware analysis report

Static analysis result for SHA-256 95283367b0e30cc6…

MALICIOUS

PDF

48.4 KB Created: 2020-07-29 03:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11dce5fb5448d585d5a5b2c04782ec16 SHA-1: c4d77a0c5deab1f52e49ad38b81f8d7b5571f92f SHA-256: 95283367b0e30cc618e06081afe6b00fc3c444d25986a24d92afcbb26d302e81
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL points to a known redirector, likely part of a phishing or malware distribution chain. While the document body contains text related to a worksheet, the embedded links are the primary indicators of malicious intent.

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.com/pify?keyword=regions+of+the+world+africa+worksheet In PDF document text
    • http://files.jmn-i.com/uploads/1/3/0/8/130814642/badegumun-vafadivo.pdfIn PDF document text
    • http://files.savoringcharlotte.com/uploads/1/3/0/9/130969489/bogadatolora.pdfIn PDF document text
    • http://files.jaztalks.com/uploads/1/3/1/3/131379262/401245.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/1/0430/8742/9785/files/rogadasojemuworulotesur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/jofuponagaxiviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/7120056872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/wemojeruvigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/zuwekolunegenujoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2454/5949/files/15918850002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/faponax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/kubikovidekod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/33010519785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6488/5397/files/44523516785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/xoselevoxomusef.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_off00007e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8F 5232 bytes
SHA-256: 4cfb8ca0382c81ae8be630c56d87ac9a987bc3c0230fe740fd04e52e60961498
font_01_sfnt_off00009069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9069 10544 bytes
SHA-256: c787e600cb41118d52448d9ea72fd68c57e3dbbe7ecaedf3c35a0492b8377b78

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