Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fc5ff54dd22c72…

MALICIOUS

PDF

32.8 KB Created: 2020-08-02 16:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae09ea0de3989481fd1befa42d139629 SHA-1: 2332af832b51a11794085d17fa92fb9f06d13d1e SHA-256: d4fc5ff54dd22c7238c184f18e2a637033506a9d8d69769d6c6e0de3ee60978b
194 Risk Score

Malware Insights

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

The PDF document exhibits malicious behavior through a high density of external links, identified as a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=how+to+move+channels+in+discord', is flagged as a known malicious redirector. The document body, though partially corrupted, contains text related to Discord channels and the tool 'wkhtmltopdf', suggesting a lure to disguise the malicious redirection. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=how+to+move+channels+in+discord In PDF document text
    • http://files.fertilegreenfarms.com/uploads/1/3/1/4/131409498/wobafipof.pdfIn PDF document text
    • http://files.athenas-owl.com/uploads/1/3/1/3/131378975/f73489e38c.pdfIn PDF document text
    • http://files.georgelibermanphotos.com/uploads/1/3/0/7/130740130/0ab3de3648.pdfIn PDF document text
    • http://files.twistedtangerine.com/uploads/1/3/2/6/132682295/a23c91fe5c23.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/1/0430/9801/3845/files/24928261399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/mirujazawasofamuvorawiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/pawupodepavikowigimizere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/8509302142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/88691902272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8100/7255/files/convert_to_rtf_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/56128342936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/21957632907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/42801756419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/nuzelonubog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/59009345535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/abandoned_projects_in_nigeria_pdf.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_off0000455f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x455F 5292 bytes
SHA-256: 56929027f45e18894e8471db053c030d8db5490a39805ebde390444e48bd81e6
font_01_sfnt_off00005745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5745 9180 bytes
SHA-256: 6ce57987464a87f97398b480604d2d1d335de9ec4215e74dab3e04cd1dea76ae

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