Malicious PDF — malware analysis report

Static analysis result for SHA-256 f76ab76570d467fe…

MALICIOUS

PDF

46.3 KB Created: 2020-08-05 03:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5baff6895424963efc1f9ccf09e2740 SHA-1: c2c8af2d6c243d18a96fbdb9b7ac7cbd79ad0be2 SHA-256: f76ab76570d467feeb29595d58be117d419118e4e59fac4ee0ab40a432aa21d3
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to lure users to a malicious site under the guise of providing a construction book. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous embedded URLs and the malicious redirector suggest a phishing or redirection attack.

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.ru/pify?keyword=best+building+construction+book+pdf In PDF document text
    • http://vukoj.michaeljeffress.com/uploads/1/3/1/8/131856725/5a89393433c.pdfIn PDF document text
    • http://files.jordanmclayton.com/uploads/1/3/1/6/131607163/4443392.pdfIn PDF document text
    • http://files.apemum.com/uploads/1/3/1/8/131872087/revof-faresog-doruwojibabol.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/1/0432/1935/3767/files/19690439970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7795/9833/files/84436816753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8196/5474/files/45510455240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/7434746821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0933/4696/files/fuvasozakiguxakujorax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/kuwipojozedawikefov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/historia_de_la_bandera_de_mxico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/corazon_de_nio_partitura_violin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/levonojikedemegukiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/quran_with_urdu_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/dutolaweza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/82005647390.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_off000076ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AD 5368 bytes
SHA-256: 48838756409917f0c096ec4b17e58591e293277feac692c276ab3469f03c6715
font_01_sfnt_off00008904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8904 10492 bytes
SHA-256: 651ae1bd9ffa4f55e1732b6692c659cdc3d3a91383ebdbfe9898ae599d672518

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