Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e71afc4473febbf…

MALICIOUS

PDF

44.9 KB Created: 2020-07-28 14:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c6f42eeff7438e1fa0dfce656b1c0cf SHA-1: 9b7772cec36b2dcd36fbef5406d1eb5f3ca5cfe3 SHA-256: 2e71afc4473febbfca5f5e6b8ff5199db65bf35b071536f898b546cf264978ef
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link `https://ttraff.com/pify?keyword=operatoria+dental+barrancos+4+edicion+pdf` points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of external PDF links, with `https://cdn.shopify.com/s/files/1/0432/4442/1282/files/93938835533.pdf` being the first identified. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used for creating PDF documents from web content, which aligns with the presence of numerous external links.

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=operatoria+dental+barrancos+4+edicion+pdf In PDF document text
    • http://files.ianwhittaker.com/uploads/1/3/1/3/131383924/supigovamesug_nazonapofuvuraf_boloni.pdfIn PDF document text
    • http://files.sacstatecki.org/uploads/1/3/1/4/131407226/2889764.pdfIn PDF document text
    • http://files.halcyonimages.com.au/uploads/1/3/1/4/131453421/3572532.pdfIn PDF document text
    • http://files.ybcakesandmore.com/uploads/1/3/0/8/130873906/4871236.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/1/0432/4442/1282/files/93938835533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/25117179181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/luxutisifudelafimokeruduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/gubusitiketonikip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/kulupunemiwikiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/88490639930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/podojineduvutanelomud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/6562820360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/relixoguxowefu.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 6

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_off000072de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72DE 5192 bytes
SHA-256: 1b76a17cb4085f70bc717eb402a6e730d0e27aa8ed607647f8f24659a2869da8
font_01_sfnt_off00008488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8488 9880 bytes
SHA-256: ab30d11a7827961e03ef3ebbbe27fe8237b29d812633642fa2dc9120fb78f8c9

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