Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a91bddc1055fbc…

MALICIOUS

PDF

47.2 KB Created: 2020-08-28 07:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ea4f0bddd6480e2916a0610019a96d1 SHA-1: ad7899a0141198fe97c714e3f2672f0852950029 SHA-256: d7a91bddc1055fbc468021daf0517c0d83ce173eebc9b6926f82d6dd5e925d05
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic identifying it as a PDF SEO link farm and another flagging a link to a known malicious redirector. The document body itself is largely obfuscated but contains references to the malicious URL and benign-looking PDF filenames, suggesting a lure to disguise the malicious intent. The primary goal appears to be SEO manipulation or redirecting users to malicious content via the numerous 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.me/pify?keyword=my+book+world+edition In PDF document text
    • http://files.amgriffinbooks.com/uploads/1/3/2/6/132695574/zonewimebefanivitat.pdfIn PDF document text
    • http://javikiv.timmetz.com/uploads/1/3/1/1/131163744/ginurujoduna.pdfIn PDF document text
    • http://sofedegub.shannondellmodelrailroad.org/uploads/1/3/1/4/131406710/8ab46dbe0f4.pdfIn PDF document text
    • http://kiwirixit.qanduproductions.com/uploads/1/3/0/8/130813108/7234012.pdfIn PDF document text
    • http://sigaj.origin-of-religion.com/uploads/1/3/0/9/130969336/2027843.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/1/0440/0673/6037/files/architect_resume_template_microsoft_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vexib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2636/6116/files/17417831479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/telecharger_dictionnaire_francais_allemand.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/18961590671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1066/3079/files/28968480992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3008/4760/files/beekeeping_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8603/5621/files/23173199413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0615/6190/files/kumamakedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/redowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/83860712541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/95055383916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/janutaxukaxoromalas.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_off00007bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC2 4832 bytes
SHA-256: 63ce04208485bd795acae27e3ad2ec3bc4ea3a5aa895d92e5c283add5bd0770d
font_01_sfnt_off00008c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5B 10420 bytes
SHA-256: 466985019793c805601eac8586c93d02c0a4d2ce9198d69dc43214e07fe278a7

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