Malicious PDF — malware analysis report

Static analysis result for SHA-256 726cec1c87c447d9…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 23:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 099c760597a45fd6c8acf29ee938c21b SHA-1: 33b64ef07c8c639b297701bdcb035c654e447c0b SHA-256: 726cec1c87c447d9fd9a3e21e92031f3b4b91c1ccd9b1d12da28093033144f45
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body and heuristics indicate a lure for a modded application, likely a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the embedded links are designed to lead 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=hungry+shark+world+all+sharks+mod+apk In PDF document text
    • http://jagexamid.wer4jesus.com/uploads/1/3/2/6/132681670/nemopasil-vitesafuvoxen-fikidikefowezi.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/1/0433/0687/7080/files/87960197539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5996/1247/files/jurnal_titrasi_argentometri_metode_mohr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/jivukixaperosavubenilere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/mixovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2913/4487/files/22035469070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/morphvox_pro_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/40259296582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0707/8564/files/phylum_porifera_characteristics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/online_convert_jpg_to_less_than_1mb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/css_media_queries_mobile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5137/7049/files/nimofap.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 1

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_off00006aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEA 5592 bytes
SHA-256: 4054f893a06c9dae35d278e7179b1dd85cda96a6a04057b397ff71bf2872dcea
font_01_sfnt_off00007dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD1 10520 bytes
SHA-256: 0df4fce7e210902cb4a7d181a15468573d75d210bff51f97b4491a69214e55dc

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