Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dfc798da8e250fd…

MALICIOUS

PDF

46.1 KB Created: 2020-08-09 10:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c66a6212646dcc918420fca32840455 SHA-1: 8a07d98d9b59447c4dc83136e9937ea2ded5dd0b SHA-256: 8dfc798da8e250fd037ca8229471969fa9e9e5c0dbf5c2671386654cadffd942
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large number of external links. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.com/pify?keyword=causative+agent+of+malaria+pdf', which likely serves as the initial stage for delivering malicious content or phishing pages. The presence of numerous other links, many hosted on Shopify, suggests a coordinated effort to distribute malicious payloads or lure victims through deceptive 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.com/pify?keyword=causative+agent+of+malaria+pdf In PDF document text
    • http://zobuva.tnfederationfortheaging.org/uploads/1/3/1/1/131164243/92310876a9f2.pdfIn PDF document text
    • http://files.riveterlaw.com/uploads/1/3/1/6/131636988/77a5768.pdfIn PDF document text
    • http://files.freshskintattoos.com/uploads/1/3/0/7/130775679/pasibol_zavisomomiv.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/1/0428/4622/4551/files/88052916438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/63659876437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/xuvopedotutupodep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2124/6359/files/95919874600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/30_day_ab_and_squat_challenge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/fefukozoramawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/vuwekosaxelarowuzoget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/moxav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/2465/1164/files/monir_khan_mp3_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/vomunenapanafolufoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/37200455847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/libidokubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/kujubatepenapubugusajubu.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_off000074df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74DF 5324 bytes
SHA-256: 99409eb1a3b866313f88622138e6fd19f436dc643d156678c1f6f2961429843f
font_01_sfnt_off000086eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EB 10716 bytes
SHA-256: 3989af2efe2a862e653b8f96514d99be375bcebe2cf2df6cb222a2eba0f57aa3

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