Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe020a2f0722983…

MALICIOUS

PDF

57.7 KB Created: 2020-09-11 00:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e7125d368d67cec8beb3273805a6fd0 SHA-1: eff87f89dfa5e278ec7c97c35f66571d0a626d8e SHA-256: 4fe020a2f07229832848b8d70b24637c6b5183c8a983d3ecf2b710c31c5bad8c
192 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 link farms and redirectors. The document body, though heavily obfuscated, contains a URL that leads to a known malicious redirector. This suggests the document is designed to redirect the user to malicious sites, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 4

  • 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.
  • 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.com/pify?keyword=birthday+wishes+song++in+tamil In PDF document text
    • http://files.okichitaw.com/uploads/1/3/2/8/132815343/garadajozenaxu-vapexasosetos-nivesigogud-bunekirilebo.pdfIn PDF document text
    • http://kubus.udderangels.net/uploads/1/3/1/4/131483830/6466988.pdfIn PDF document text
    • http://nubetifi.cammiebehnke.com/uploads/1/3/1/8/131856772/4117764.pdfIn PDF document text
    • http://files.telecollaboration.eu/uploads/1/3/1/1/131163761/2026987.pdfIn PDF document text
    • http://files.babesintoylanddaycare.com/uploads/1/3/0/7/130776208/f8bd23b7ea63e7.pdfIn PDF document text
    • https:///a10.gaanacdn.com/images/albums/56/2686956In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/c34eac_559e076eff9540c4b3f18650b2da24e5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f67134_c2de55fce59e404b8a9d1de7566156da.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_04bdddd48700441bb53d7274cfbef8dd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9ea91e_bee6c1df060c41c3a63d3b383c92257d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/140efa_cd2873805c0f49d09347cea721abfdc5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/64f9d2_8779cf4f516d4e9092f1ca625d62ef99.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a72fa8_ce4b713797d0468d8fbce1374d5f6a1f.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7878/5951/files/37086472937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0946/files/anthem_for_doomed_youth_form_and_structure.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA748 5484 bytes
SHA-256: c08e505add5818d9dbd558a3821238bc8951a7ae6b11421f325a9d0f8cba9d9b
font_01_sfnt_off0000b9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DC 12948 bytes
SHA-256: ef09ad0e839e886ae623d0532243de72ed7414440f7b5cbc0e6ff964403810e8

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