Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c03c12c3e5b9e8…

MALICIOUS

PDF

34.7 KB Created: 2020-08-21 18:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 342156759bf8e8dc457b5e1c97816a56 SHA-1: 6e63bf6ecc112a3b65855e578a69875ccca1ff9f SHA-256: e8c03c12c3e5b9e8f37ab524d3f45e19e9a732d8ae4300cfc209de4762167fcc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=expert+betting+premium+apk+free'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on Shopify. The ML classifier strongly supports the malicious verdict. The document body, though partially corrupted, contains the same lure text and URL, reinforcing the malicious intent to redirect users to potentially harmful content.

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=expert+betting+premium+apk+free In PDF document text
    • http://vuxopad.medtechwearables.com/uploads/1/3/1/3/131379730/7769098.pdfIn PDF document text
    • http://files.bestflooringco.com/uploads/1/3/0/9/130969680/metolamisuk.pdfIn PDF document text
    • http://files.jtdudrow.com/uploads/1/3/0/8/130813992/dilamovaretozopor.pdfIn PDF document text
    • http://xajasuxak.alexandracastelli.com/uploads/1/3/1/4/131408024/runatikoredofikes.pdfIn PDF document text
    • http://kawuzamo.movingmindsdance.org/uploads/1/3/1/4/131437657/2724778.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/1/0436/2734/8121/files/innova_3100_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/fusojiwumewavowin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zozaweguxilamefawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/vawefeditosudubur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1518/4295/files/xugifebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2011/6387/files/978118298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/sanelozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0992/files/ccna_200_125_exam_free_download.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_off000048d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D3 5240 bytes
SHA-256: cf7a33101e13fc225ee7e4b750f55fc24a0a36ffd725e61e7ef2c400df1488c9
font_01_sfnt_off00005aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA8 10416 bytes
SHA-256: 69afc15bd0db6396a44b6299480eaeff000fa159943d2174cfa2a5e2da201a1a

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