Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebb4f4670815b3e…

MALICIOUS

PDF

46.8 KB Created: 2020-08-27 12:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d2bf01c02b56c03aa45f3a2cb538938 SHA-1: 40b6f1cd4ba1f5d77c2fc09411383fb3bb91f4e2 SHA-256: cebb4f4670815b3e5cbb3a675a0efeae36d6ff9bf11e32fb7b948b979a28191a
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=emoji+keyboard+android'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking PDF URLs, suggesting a lure to a malicious site. The primary intent appears to be redirecting the user to a malicious resource.

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=emoji+keyboard+android In PDF document text
    • http://files.stauntonalliancechurch.org/uploads/1/3/0/9/130969545/758928.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/1/0428/9141/1615/files/can_could_may_should_must_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/hallett_cantorian_set_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7685/9544/files/83780293935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/crestron_am-_200_data_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6457/3593/files/wipube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/phn_mm_chuyn_sang_jpg_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/3139028028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/18921285219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5508/7526/files/pafezotutokape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/71899727432.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B66 3656 bytes
SHA-256: 4e2f52c6d36cb6af3724feb5ba833921d9737ed6adfba5a9afd4e94dc502a14a
font_01_sfnt_off0000787a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787A 5100 bytes
SHA-256: 2e9d2da0fe486173298d89aaf5c42ab13aea9f088e433b68c7aabf96bdf53090
font_02_sfnt_off000089cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89CD 11148 bytes
SHA-256: 704072fd5e3b6b1f693c245a2c9b38161ac8d63d757b177749f382621f070d1a

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