Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd666f32bef8773…

MALICIOUS

PDF

41.8 KB Created: 2020-08-07 00:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14fd4e60788ec7fc5a5d994fef27334a SHA-1: 553ff5be5a5fbc4bf03291fdbead61a4bf14883a SHA-256: 9cd666f32bef877359fecebf51b6cc311c80922f0526de91169b1448f3ec3c0a
194 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. Additionally, it contains a mass external PDF link farm, with many links pointing to Shopify domains, but the primary malicious URL is the redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the malicious URL and a benign-looking PDF filename, suggesting a lure.

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=funcion+de+la+hormona+antidiuretica+pdf In PDF document text
    • http://demal.stensolo.com/uploads/1/3/1/8/131857334/a54682e6de.pdfIn PDF document text
    • http://files.ddeacademy.com/uploads/1/3/1/8/131857476/55737269.pdfIn PDF document text
    • http://files.roe40.com/uploads/1/3/2/8/132815054/lexivumip_jetusev_xawejigorado.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/1/0444/4710/5191/files/convertxtodvd_5_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5823/files/7163547941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9471/1203/files/periodic_table_printable_black_and_white.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5446/5175/files/dijifuvepubesonixoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/89116091937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8143/1195/files/belatisubipoxosupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4215/9257/files/runigalovolupirurarokop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6353/1933/files/71772230092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/4251877785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/tuwemirupizopadibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/genetic_polymorphism_in_drug_transport.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 7

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_off0000639e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639E 5172 bytes
SHA-256: bfce04dc6f87c5b09a134e567e8379394140bad7b4c38bfc371b72b04b70c26f
font_01_sfnt_off0000750d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x750D 10800 bytes
SHA-256: 01c90acb1b6c237baef1a67ab916e4d4d6449dd6274813b52c3d6fab8d137f05

Open this report in the interactive analyzer, or submit your own file for analysis.