Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ed1f290b894690…

MALICIOUS

PDF

43.6 KB Created: 2020-09-10 09:42:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b012e21d92753affd2322b323a6ccc1 SHA-1: 226caee418ceb34e2774355bac6d675b2d1a6f33 SHA-256: 83ed1f290b894690f9d6e33f827d73b59d1af8b41ba3b37bfebd40065aa2abb6
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service that is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'beautiful nature hd wallpapers free' and includes the primary redirector URL. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the use of a malicious redirector and a link farm for SEO manipulation, likely to distribute malware or phish for credentials.

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.link/pify?keyword=beautiful+nature+hd+wallpapers+free In PDF document text
    • http://pitirilub.followpiranha.com/uploads/1/3/2/6/132681501/vevuzif-dujujo-kepos.pdfIn PDF document text
    • http://videvefix.arnoldroad.org/uploads/1/3/0/9/130969260/matofufilom.pdfIn PDF document text
    • http://files.brooklynprimary.school.nz/uploads/1/3/0/8/130874298/mefefesabi.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/1/0432/1656/8482/files/bafg_formblatt_1_anlage_1_hilfe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/firosusov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2658/7549/files/reluzarofexabuvejaxulur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/sukaja.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a771bd_7204d54b4e30498bbf202d901e3136d2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cc03df_ab030c69655f4e1bb360cb28ba0e015c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b97cba_12c4cfad22dd4732a5ce4d3d3fe01ea7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d54300_64e327289f434c7db4c578186fd49986.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9d869b_3adeb7a064264a8d9ece7f2835cd639b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/69b86f_8636a123a53b4c7f9b3c016398f68757.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/13ae68_dcfe3f3443854629a6cc51d2aefe4190.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/72216b_6345a2cdad064ab9914f7c399c55c812.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d954c5_389d0971c5244e55aa7896093faa8dab.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 4

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_off00006c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5F 5268 bytes
SHA-256: 1738222dca7ae8751eec4582b07c8cb8167a55ab8ee6421f46e2df6c3624cff6
font_01_sfnt_off00007e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E58 10196 bytes
SHA-256: c6eab314af06852da05c65a10818e71b5101ba6573b9fd473144d7ea9fa4795b

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