Malicious PDF — malware analysis report

Static analysis result for SHA-256 08cd26994039f44e…

MALICIOUS

PDF

47.6 KB Created: 2020-08-08 14:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 598c296121c454534451a1cf8ca97601 SHA-1: 59448881ef85b5aba3511f72693b4c21143e7ac6 SHA-256: 08cd26994039f44e6b8b7e2650b2ce06866821542dc074a255492c2cffd75bff
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to a known malicious URL, identified as a redirector for SEO link farms. The document body, though heavily obfuscated, contains text related to 'water pollution essay bengali pdf' and the malicious URL, suggesting a phishing or scam lure. The ML classifier and critical heuristics strongly indicate malicious intent.

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=water+pollution+essay+bengali+pdf In PDF document text
    • http://files.karleneblandfineart.com/uploads/1/3/0/7/130776451/jekewalivumetek_benowapedaxo.pdfIn PDF document text
    • http://files.onesource-ph.com/uploads/1/3/0/8/130813887/vinonige.pdfIn PDF document text
    • http://files.ajmasotti.com/uploads/1/3/2/6/132695836/xokivufusadasav.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/1/0428/9118/2243/files/ravoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1832/0034/files/49501043281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7227/5103/files/23914154964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/glu_games_hack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/pilitibumafuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9755/5098/files/newspaper_articles_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/pidedifonixuvixob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/pdf_redirect_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/1674530815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8052/3681/files/xajomozemazumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9281/1669/files/hadis_bukhari_bangla.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_off00007b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0A 5464 bytes
SHA-256: 8d969467fe43c1b067d3542ddc4466bebcc7b85d55aeb09ca87c5194e756904d
font_01_sfnt_off00008dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC0 10420 bytes
SHA-256: a07a3eecc13ea1341574214873551f60de83e58687cea50df06b040fe6a5ab30

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