Malicious PDF — malware analysis report

Static analysis result for SHA-256 808320ff5465fda2…

MALICIOUS

PDF

41.7 KB Created: 2020-08-21 21:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8520ab54a0f57bc7d07b194354623bd SHA-1: 649cee01a43dff4bdc26bcbccdb2333ad3a6eda4 SHA-256: 808320ff5465fda28faf4b9b9fc95921f0ea1e772e6386cf266911ccd0d49492
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The embedded URLs and the document body suggest a lure for free downloads, which then redirects to malicious infrastructure. 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.cc/pify?keyword=jingle+bells+karaoke+free In PDF document text
    • http://files.openheartstudio.org/uploads/1/3/1/6/131606493/pekunavatumivev.pdfIn PDF document text
    • http://zajoniw.fumps.org/uploads/1/3/0/8/130874257/6388781.pdfIn PDF document text
    • http://files.blresales.com/uploads/1/3/1/4/131409200/f2bf36f4fdde72b.pdfIn PDF document text
    • http://files.dalhousieparentsdaycare.ca/uploads/1/3/2/7/132712558/9bf6293eabc.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/1/0440/5844/3941/files/99642842629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/santa_cruz_movie_times.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7524/7003/files/speer_reloading_manual_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7977/7945/files/catcher_in_the_rye_question.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/health_and_physical_education_class_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1683/0632/files/34109174808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/wulakomizevobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/algebraic_fractions_worksheet_kuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/80122916024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9443/2161/files/72302975151.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 7

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_off00006471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6471 5128 bytes
SHA-256: 64ce9c5832ed3ce0dd7fac7f6ae02e30ee70cd2e35c0f2b1604f9f300afb0620
font_01_sfnt_off000075ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75EF 10640 bytes
SHA-256: 0ae4574dcd3cd522c1bb6e819d0e6bafd6db19eb78c4a0d8d107d89fa461b80a

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