Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eca52518f7a1ff8…

MALICIOUS

PDF

41.5 KB Created: 2020-08-11 09:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfe1c73d0950d5846a8ab49f3251ddf5 SHA-1: f50f1cd2c62cf0e33b935e219dcea9ea7d08d276 SHA-256: 9eca52518f7a1ff8301c9d401b451cc238fb6c88c05c5df30ff81566cf356c96
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, 'https://ttraff.ru/pify?keyword=dividing+binary+numbers+pdf', which is likely part of a phishing or scam campaign. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The presence of invoice-related language further supports the lure-based attack pattern.

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=dividing+binary+numbers+pdf In PDF document text
    • http://files.mfautodetail.com/uploads/1/3/2/8/132816107/dolidez_wesowubive.pdfIn PDF document text
    • http://revagevux.nikkileahdesigns.com/uploads/1/3/2/7/132740873/niwirerimojitelu.pdfIn PDF document text
    • http://files.soniamadelineevents.com.au/uploads/1/3/1/8/131856632/f4314c32232.pdfIn PDF document text
    • http://zovakijup.sdrsp.org/uploads/1/3/0/9/130969472/1544597.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/1/0433/9322/0775/files/93126176032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/43983716072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/66465517704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9136/5792/files/ielts_general_writing_task_1_band_9_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4591/0678/files/xufuvizisakesesit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/energias_renovables_en_costa_rica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/fuvapiwifokufekazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6879/2733/files/machine_learning_algorithmic_trading.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/viwogejanotetunomoniwuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/sudivubelutudefivuvot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7590/2363/files/26375452970.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 7

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_off00006286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6286 5628 bytes
SHA-256: 6a2e46cc6825ab101e009438469f34a8aaa69b8499c55e410c4e360fbc14f435
font_01_sfnt_off0000759f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x759F 10524 bytes
SHA-256: ef9649aad986ed9b3cc8e542e433e9771f4b61202c76ed32ee30a7d47563db89

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