Malicious PDF — malware analysis report

Static analysis result for SHA-256 625038595e7fa95f…

MALICIOUS

PDF

50.4 KB Created: 2020-08-12 22:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 279f55ca3852a4520f10442c38687991 SHA-1: 682f374b35dae2ad3b6848027c6aee1d6f4a7b99 SHA-256: 625038595e7fa95f07c597bce2e6cb5d6a60ff3fc800a564c6287f26d19ea1f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that appears to be part of a phishing lure for a 'free download'. The presence of a malicious redirector and the SEO link farm pattern strongly suggest an attempt to lead the user to a malicious site, likely for credential harvesting or malware delivery.

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=jurnal+klasifikasi+jamur+basidiomycetes+pdf In PDF document text
    • http://files.nicoledigiacobbe.com/uploads/1/3/2/8/132816096/latovi.pdfIn PDF document text
    • http://files.ftpc.org/uploads/1/3/1/8/131856725/bixosorimerikum_bopujirafewizuw_gavabos_petenedu.pdfIn PDF document text
    • http://files.leonbergersofnorlil.net/uploads/1/3/2/7/132741348/8af08abeef.pdfIn PDF document text
    • http://files.pszichokardiologia.hu/uploads/1/3/0/7/130740213/lonaj.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/1/0431/4356/1384/files/sugamikem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/belajar_bahasa_arab_pemula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/geological_map_of_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1387/2548/files/81842141310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/report_on_classroom_management_strategies_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8141/4296/files/vakigisiverovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/sizosijixewilamos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/online_bengali_story_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/97396787167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6336/9125/files/arquitectura_que_es.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9229/5333/files/chakras_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/gisenuvaveturosuragimun.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_off00008641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8641 5672 bytes
SHA-256: 8de54548f2beeb215882959d09a442bfe3eda88917a19f4e0cec726969e5526c
font_01_sfnt_off0000997c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x997C 10172 bytes
SHA-256: 017e447ff86e1ac0a4a79828cc11ceff79e2728ad5dfda4779b1bc6397d1ec1b

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