Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d4b7fafa08f2dc…

MALICIOUS

PDF

32.9 KB Created: 2020-08-10 15:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5656621b56a22b14b470b1c84e29829 SHA-1: 50d65b08a7baad3abad896b9343f2ed0e390c03c SHA-256: 97d4b7fafa08f2dcce694e278736a99a020ec795d81df1f9473412ba87d54883
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious by a machine learning classifier and contains a significant number of embedded links to external PDF files, many hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=alter+ego+1+hachette+pdf', points to a known malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme, potentially leading to malicious content or phishing pages.

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=alter+ego+1+hachette+pdf In PDF document text
    • http://files.mbrilliantbody.com/uploads/1/3/1/4/131438844/3890046.pdfIn PDF document text
    • http://files.myactiverestoration.com/uploads/1/3/0/7/130738723/majalonasiligi.pdfIn PDF document text
    • http://files.helbreathng.online/uploads/1/3/1/3/131397927/4b8872652b4.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/1/0437/7251/0362/files/c_programming_algorithms_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9423/7599/files/import_codes_for_clicker_heroes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3507/files/13591219983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6124/files/guzujufexifuninax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/banumabirigemetiwinivixij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/40928805118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/fisebixumarutibitemeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/82644046463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3978/5111/files/63419428706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2117/9816/files/92807423060.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 6

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_off000041eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41EB 5280 bytes
SHA-256: 67606bb38fcf3c4b49d42989a353787ddae2fa03a73cc9438b3b2a07ab7bd945
font_01_sfnt_off000053dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53DD 10144 bytes
SHA-256: bfbf0aa734a9599ae3c518dc1954b5bcd3794133e288711d52551d52664fdffc

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