Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f207b38b541bf7…

MALICIOUS

PDF

39.2 KB Created: 2020-08-24 20:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbbde231d68191ba09659d284f39f9b9 SHA-1: c108467914c05f3571d3dea6b9f9cd3ece303db4 SHA-256: f2f207b38b541bf763c7f8949bb4690c7aff97cab68667a8d0fe42fc9ae3fa80
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to potentially malicious redirectors. The primary malicious URL identified is https://ttraff.cc/pify?keyword=english+answers+to+how+are+you, which is flagged as a known malicious redirector. The document body, though partially corrupted, contains this URL and appears to be a lure to engage the user with a question. The ML classifier strongly indicated maliciousness, supporting the presence of these malicious 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.cc/pify?keyword=english+answers+to+how+are+you In PDF document text
    • http://files.plainseagle.com/uploads/1/3/2/7/132740586/9211513.pdfIn PDF document text
    • http://files.equinemassageschool.com/uploads/1/3/0/7/130775411/kukivotib.pdfIn PDF document text
    • http://files.tiffanywitownhall.com/uploads/1/3/1/1/131163833/vitexox_xukozeperapu_norow.pdfIn PDF document text
    • http://files.ayatechnologies.net/uploads/1/3/0/7/130776406/cd7a1a.pdfIn PDF document text
    • http://jaten.jodiemarvincreations.com/uploads/1/3/2/6/132683014/totibugitak-kutebasog.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/1/0432/9088/6312/files/citation_apa_format_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/lagisefevabanagibalawaven.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5813/files/cathy_o_brien_transformation_of_america.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/autodesk_sketchbook_unlocked_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/totijatixabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/63668785683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/moziper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/92552519556.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_off00005cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB4 5100 bytes
SHA-256: d4ac7c6ae366c96ad4420bb0e061f8dcc7cbee8ab44762277b5c80b961b7dced
font_01_sfnt_off00006e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1B 9940 bytes
SHA-256: aec0e99e90b9ea5283b83ffbe3c11451f86d58378d6774f8b523dd0a1bc4a7a8

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