Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd50cb47669ee26…

MALICIOUS

PDF

37.5 KB Created: 2020-09-16 01:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9470fbf0c56c8b2bf64ac5b5c427eae7 SHA-1: ab8e4681f845684a4b2827014e884e18e246e242 SHA-256: acd50cb47669ee266767d79fccfcb41b5a4b9fce670589cc7518c534035986bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.me/pify?keyword=south+street+school. This indicates a link farm attack pattern designed to lead users to malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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.me/pify?keyword=south+street+school In PDF document text
    • http://voxim.melaninandmotherhoodnj.org/uploads/1/3/0/8/130874284/xusineb.pdfIn PDF document text
    • http://donax.krishnaandnatansh.com/uploads/1/3/0/7/130775971/geninixerexugeji.pdfIn PDF document text
    • http://giwek.t-bart.org/uploads/1/3/1/3/131380065/5fd1631c1.pdfIn PDF document text
    • http://dilolowi.thepaintbarpaintings.com/uploads/1/3/2/7/132712253/2540538.pdfIn PDF document text
    • http://files.robplath.com/uploads/1/3/1/4/131483097/tomefidatifon_sulavex.pdfIn PDF document text
    • http://files.drmorgannd.com/uploads/1/3/2/7/132741352/nolijegedipegeb-nusemufinipavap-nepusof-tikoxap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/78c764_441ea25cf89f4b049846b7aac1503327.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/111c46_2b331bb7557140158789b6cea5f0451c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_067fd5a819054fd1a5076994dc77ec65.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9d7ad9_bfb158ed5c194bccb1dafb7b4869d67f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/55cc32_53adb04f1d1841df978174109dd86a0c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8045/6094/files/star_plus_drama_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4989 4508 bytes
SHA-256: 389c245fdf88d962cbf86f3fcc13190b353571cdd8e56aea8d0f5f84db0aefec
font_01_sfnt_off000058ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58EF 10076 bytes
SHA-256: d86ec0bc770e441c5592e1767eefb931d68f4348cee08fcfab278aaceda53462
font_02_sfnt_off00007b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B76 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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