Malicious PDF — malware analysis report

Static analysis result for SHA-256 827cdc88c54a2fd8…

MALICIOUS

PDF

42.5 KB Created: 2020-08-12 23:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc7e99bac8d829a2d32b62c5542a79ae SHA-1: 0ad538e5d88f3efb96106fb92739983518feb066 SHA-256: 827cdc88c54a2fd876e1dde2bc47b2769de38f9da9a222f1ebb596e0750863ac
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious infrastructure, disguised as educational material. The document body and heuristics indicate a link farm strategy, attempting to trick users into downloading further malicious PDFs. The primary redirector URL is https://ttraff.cc/pify?keyword=class+12+biology+chapter+13+notes+pdf, which is used to funnel traffic to various benign-looking Shopify links, some of which host actual PDF files.

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=class+12+biology+chapter+13+notes+pdf In PDF document text
    • http://turofovol.gethincoolbaugh.com/uploads/1/3/1/3/131398091/xijutura.pdfIn PDF document text
    • http://files.shopasbonline.com/uploads/1/3/1/0/131070753/f33d90feacff09.pdfIn PDF document text
    • http://files.alessclutteredlife.com/uploads/1/3/0/8/130874612/raseta.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/1/0435/6934/8763/files/i_hate_u_give.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/9340233073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/pejiworulukulodizofolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6229/5716/files/attractor_factor_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/42838877190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0396/9689/files/99293978034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4626/3201/files/artinian_ring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/71721544532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/34282726105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/blood_clotting_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5648/0935/files/lewixanukofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/bubetupotivojuxovegifile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4582/1333/files/tilefawitisulaxuj.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_off000065a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A5 5912 bytes
SHA-256: fcb3be40611855666b110b295e70e24d418b4c6e275ec93d0f141d5819d9fe0b
font_01_sfnt_off000079be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79BE 10432 bytes
SHA-256: 719433418d8c801f86a3cb797b560038ba06a24a4ffd38a1ba21f1a2896ca1a5

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