Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c73c24858af205e…

MALICIOUS

PDF

47.1 KB Created: 2020-08-05 02:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe534e66139a3e80f574c122e5d0d633 SHA-1: 99827ab49542f40b9824fdfa02dd5d193361fbbc SHA-256: 7c73c24858af205e5ee3ea7cd155ad31a5b53cf71e7764ba7a5f0de99bda8dbd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including one to a known malicious redirector, ttraff.com. The document body and embedded links suggest a phishing attempt, likely to trick users into downloading further malicious content or visiting malicious websites. The ML classifier also strongly indicated maliciousness.

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=learn+russian+pdf In PDF document text
    • http://files.centraloregonfillyourpantry.com/uploads/1/3/2/7/132740424/7488684.pdfIn PDF document text
    • http://files.thecoveatfoxhollow.com/uploads/1/3/1/4/131453031/gakosoku.pdfIn PDF document text
    • http://files.maladidaho.org/uploads/1/3/2/7/132740852/norejikavivewageloz.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/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/kasubulatulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5679/9648/files/zavawolilunimej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/sugasesubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/delonghi_espresso_ec_155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/zebumuxegoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4141/5580/files/77642850616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/cathodic_protection_survey_procedures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/tejeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/29370777931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/lagumuroxetikufopafo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE8 4944 bytes
SHA-256: b0a7d288787ba29d2a3cd59b16531cc73e1ba0b96ac9fc11928e98d7b09386dc
font_01_sfnt_off00008dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD0 9980 bytes
SHA-256: b5076edfd576d8fd1936d892329704bc0cb35eeffc6745709694a927d0493d90

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