Malicious PDF — malware analysis report

Static analysis result for SHA-256 649a633f5639aed9…

MALICIOUS

PDF

50.6 KB Created: 2020-08-05 18:15:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e2b945f8c01038f02434cc2f96bcd1e SHA-1: 0545840c775c4fa30c09c08d16b32d2d97d6d46c SHA-256: 649a633f5639aed941c427cc00e2e964739600d0d2a21ee334c1d2eb4aa5e410
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate downloads, but the primary link redirects to malicious infrastructure. This indicates a phishing or scam attempt to lure users to a compromised site. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=twilight+life+and+death+pdf+download+free In PDF document text
    • http://files.albertvilleband.com/uploads/1/3/0/7/130740205/c642fdf1cc5c.pdfIn PDF document text
    • http://welutasot.crueltyfreecuisine.com/uploads/1/3/1/8/131856725/3886133.pdfIn PDF document text
    • http://files.womensquartermarathon.com/uploads/1/3/1/3/131379971/2364456.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/1/0430/8949/4177/files/97743793825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6876/5861/files/lejurelafejuzej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/67456345234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/arduino_map_float.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5693/9676/files/aditya_birla_mutual_fund_sip_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/35934510905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faxusumowavunisipor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6019/8557/files/zesagadirepasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7816/3363/files/biogenic_elements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2771/8567/files/sifekekedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/61613536431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3851/5095/files/zotaketuxelaxel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/libros_sobre_generos_literarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/one_o_clock_jump_sheet_music.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_off0000866d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866D 5164 bytes
SHA-256: 06329b88746e3940f7a08b6ca6983db9b940aaf2e10991c21d8d1b289154b590
font_01_sfnt_off0000980f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x980F 10956 bytes
SHA-256: e5aa8e8389364f74be92c6a9b70d7da0b88372d7f9661882ca40c21d3f745786

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