Malicious PDF — malware analysis report

Static analysis result for SHA-256 283177bf4812ff33…

MALICIOUS

PDF

41.5 KB Created: 2020-08-09 09:31:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccc7ddaabccb83e00cc8a7fe35e53da4 SHA-1: cda801504c05671d8c39e982f9a41080fff39fc3 SHA-256: 283177bf4812ff337cbfd1411884eee2fa457acb80cb5cedea6c541befe883cf
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to improve search engine ranking, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL. The ML classifier strongly indicated maliciousness. The primary attack vector appears to be a lure to a malicious site disguised as a document converter.

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=able2extract+pdf+to+dwg+converter In PDF document text
    • http://files.abelenepark.com/uploads/1/3/0/9/130969896/b929a4302d.pdfIn PDF document text
    • http://files.brianschoettler.com/uploads/1/3/1/4/131454373/pamug-wupimizazal-mebazob-xovemunaf.pdfIn PDF document text
    • http://xixegel.nssdoctors.com/uploads/1/3/1/6/131637814/kekuvawem-gowowaniwesaxu.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/1/0429/6422/2101/files/17452984660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1250/5256/files/seberepitopuninagirax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/wafegijiwojilevep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/741900264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/tadamezexonazozozopemimol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/43505590950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/wumepipukutunumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/fisiopatologia_de_insuficiencia_cardiaca_congestiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/daxonoxezenefupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93236297381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/1229255838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3258/2056/files/10309172516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/27768912894.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 3

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_off00006307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6307 5624 bytes
SHA-256: 079805ca48062ed937e1ee78a66dea1e796deeea15aa6d658b69cd8c8a615866
font_01_sfnt_off0000765e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765E 10180 bytes
SHA-256: 92df33be5c4b10c2ab832e2754e361ee5abcdc2c6fbd8062f91258d4463bb696

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