Malicious PDF — malware analysis report

Static analysis result for SHA-256 972e19c8b2510ead…

MALICIOUS

PDF

40.5 KB Created: 2020-08-27 18:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66e64e59932cc2875e49509d503340dc SHA-1: a358ea2e9b4276e7693157ba32c5e2851389952f SHA-256: 972e19c8b2510ead7f3c3851e2df2c8ac6352886dcc38182d470aa6377d9d449
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=statique+des+solides+exercices+corri.

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=statique+des+solides+exercices+corri In PDF document text
    • http://files.matthewcooke.com/uploads/1/3/0/9/130969075/bubetojajumaw_ruzikidexokof_zutenupilukoji_zujarorir.pdfIn PDF document text
    • http://januxasi.4th.mrslambsroom.com/uploads/1/3/2/6/132696030/botumurazozuvusus.pdfIn PDF document text
    • http://gejoraga.smbfc.org/uploads/1/3/1/4/131483281/kuvumileparukejet.pdfIn PDF document text
    • http://fujime.spudflower.ca/uploads/1/3/1/6/131606490/58db6f8086.pdfIn PDF document text
    • http://files.paigeandbrittboutique.com/uploads/1/3/0/7/130776167/rotogifelerafedijalo.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/1/0427/9202/6271/files/aggression_and_violence_in_adolescence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/vozus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9331/9068/files/gunim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/tillich_systematic_theology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2500/6497/files/25164627336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/john_deere_x585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5633/9861/files/gozezusuxizuzamilefiniwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/best_ebook_reader_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4477/1739/files/tifedo.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 5

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_off00005d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D78 5232 bytes
SHA-256: bf833586cca3790e54b6fbb9dcda173484b9aeeb0853cf14e4dbfbcf4ed8f1de
font_01_sfnt_off00006f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F42 11524 bytes
SHA-256: 846b843ab7228a36d64f628b216cf45ffccd9a6cbf04dd78869cfb6c86740d33

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