Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a140b12cf33627…

MALICIOUS

PDF

38.7 KB Created: 2020-07-30 15:37:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63b2b925c6ad8fc3b3dc23b767d7aced SHA-1: a87ccd2b98c9eca61706df670624aa5d226b30d1 SHA-256: d8a140b12cf33627f2c8cc263fc53c0f2457a06c8298abb8e706a02c0a741582
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector hosted on ttraff.com. The document body, though heavily obfuscated, appears to be a lure related to language evaluation ('Alter ego 1 carnet d evaluation delf a1 pdf'). The presence of a link farm suggests an attempt to distribute malicious content or conduct phishing by directing users to external sites.

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.com/pify?keyword=alter+ego+1+carnet+d+%25C3%25A9valuation+delf+a1+pdf In PDF document text
    • http://files.ebenezermethodist.org/uploads/1/3/1/6/131637853/jisosusuxiwe.pdfIn PDF document text
    • http://files.irobeauty.com/uploads/1/3/1/4/131453645/caab15af9a5f.pdfIn PDF document text
    • http://files.eelasor.com/uploads/1/3/0/7/130776150/6f2279.pdfIn PDF document text
    • http://files.lafayetteschoolrestoration.com/uploads/1/3/1/3/131398357/nutuva.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/1/0429/2512/9894/files/kakefemetegagoluximugele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/wegefegalanuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7548/6367/files/61236722577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4442/8181/files/bebose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9429/4171/files/28864646112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/netubufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/67204582207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/vudewedazepasugojoletizog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/midotikonujeriruzopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4374/7990/files/90900509677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/galelotagolozidudevar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakuxosisubesabemobaf.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_off00005798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5798 5272 bytes
SHA-256: 4904b115dcf76aae3bc59dbae3d0b3e3e7524303759812383802065b016bba32
font_01_sfnt_off00006956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6956 10376 bytes
SHA-256: ca83eb6522069c993dec5a2e5ce9aa89cde781c34d7bed8b34f349d3eb9d40cb

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