Malicious PDF — malware analysis report

Static analysis result for SHA-256 671416d11486e160…

MALICIOUS

PDF

35.0 KB Created: 2020-08-04 19:44:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7701a795542c23239b3681fbb2e322ca SHA-1: 61d39dc61777763c52ead79addad5fb39b055c1f SHA-256: 671416d11486e16024e5e1d2a37c1b2e9a47b1a08fabe86af3e8d52d0876e2d0
194 Risk Score

Malware Insights

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

This PDF file was identified as malicious by an ML classifier and contains multiple links to a redirector service, specifically 'https://ttraff.com/pify?keyword=3000+basic+english+words+pdf'. The document body and heuristics indicate a tactic of creating a link farm of PDFs, likely for SEO manipulation to lure users into downloading malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or scam attempt.

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.com/pify?keyword=3000+basic+english+words+pdf In PDF document text
    • http://files.westvalleyfamilies.com/uploads/1/3/1/0/131070846/loxomajutal.pdfIn PDF document text
    • http://files.dallasooh.com/uploads/1/3/1/6/131637125/7098152.pdfIn PDF document text
    • http://files.stpeterstw.com/uploads/1/3/0/8/130813855/nudaxuraso-dixetupix.pdfIn PDF document text
    • http://files.gailshortwrites.com/uploads/1/3/2/8/132815183/2657099a.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/1/0431/1970/6273/files/wulasega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/movuzejutagadolobixosuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/23677900013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3584/0932/files/transport_phenomena_bird_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/tipijijizelunitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5708/files/bexinovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3137/8592/files/11253680799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/dogaxawove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/43272131949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/xesugegigepubum.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 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_off00004a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A21 5860 bytes
SHA-256: 0021ebb1fa00865af902e134154896ff8f2c0200e358c5ed0c1eaa29dbb3146b
font_01_sfnt_off00005e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E11 9752 bytes
SHA-256: 5f2de4b176c204673d2b5576c88e8036879e754ab9cb3ad7933666021626db3f

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