Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4773478892b8282…

MALICIOUS

PDF

111.8 KB Created: 2020-09-12 07:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e226f9e54727306f7f735ee9183b0ac SHA-1: b885ea589010c4a631217765be7f81ff8b2c5828 SHA-256: d4773478892b828237d59dd028d8438368b04e7c357786ddbe933ceebed25f4b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/pify?keyword=excel+vba+current+date+time+format'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is part of a larger SEO-based malicious distribution effort. No scripts were extracted, but the presence of a malicious redirector URL is a strong indicator of malicious intent.

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.club/pify?keyword=excel+vba+current+date+time+format In PDF document text
    • http://nezisike.neurology-u-tokyo.com/uploads/1/3/1/4/131437604/6311767.pdfIn PDF document text
    • http://files.delamare-photography.co.uk/uploads/1/3/2/6/132681536/movuw.pdfIn PDF document text
    • http://files.studioafrolatino.com/uploads/1/3/1/8/131857445/cee76309419.pdfIn PDF document text
    • http://files.msumc.net/uploads/1/3/1/3/131380687/dofetasusaw.pdfIn PDF document text
    • http://vurukurak.staceykennellynester.com/uploads/1/3/1/4/131437607/mobadiro.pdfIn PDF document text
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.pdfIn PDF document text
    • http://seriwe.huffmansflowersofthefield.com/uploads/1/3/0/7/130739892/jopegutoro.pdfIn 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/5a4aad_283dea2d838a4ff68a4ef04e5c5f3b73.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a891c0_3282a8d128d14835847e49b02f56ecc6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8716ab_e3c224e29aa74aca84fa0f8d5667be17.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/34e21e_75f8057788ae47d2afe356ce8b047dca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6816/1953/files/41st_kennedy_center_honors_performances.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/donkey_kong_country_3_roms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/0881/2198/files/11890211445.pdfIn PDF document text
    • http://www.mvps.org/dmcritchie/excel/datetime.htmIn PDF document text
    • http://www.mvps.org/dmcritchiIn 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 8

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_off00016870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16870 5216 bytes
SHA-256: 74d0dcc1e7a9ab7ce593da94813354477ec58562e38dfb3ed2b65dbb6628c46a
font_01_sfnt_off00017a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A25 17860 bytes
SHA-256: bac3b65b40fa5b5b78c1a51af4c3331a16ef5dc6790bcbc83729f645d342d31f

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