Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae16aa2a30e70a4…

MALICIOUS

PDF

39.9 KB Created: 2020-08-18 15:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47b66f2f54ebd2ce2e2ff71e53b45114 SHA-1: 76a8aa4e9acac7f91fc2d4a2e6906f838bec5524 SHA-256: dae16aa2a30e70a4daf84eda30bc96687a40b0caf5134de7ee9d22e9efbff5c4
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=unhide+sheet+in+excel+online'. This URL is embedded within the document body, disguised as a guide for unhiding Excel sheets. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, and the document body itself is heavily obfuscated, but the primary intent appears to be redirecting the user to malicious infrastructure.

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=unhide+sheet+in+excel+online In PDF document text
    • http://fonobo.guyswoodshop.com/uploads/1/3/2/3/132302780/3258380.pdfIn PDF document text
    • http://files.yefeart.com/uploads/1/3/1/6/131606392/36729f9.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/1/0439/1406/8123/files/monujefevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/mamabowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/34534547861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/rexoguwovaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4965/files/safujesogaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/galenutitezufizawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/79469005411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/sadegijekamagesetim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/46615458100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/ncert_english_grammar_book_for_class_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/jukinapupupirireb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/66620089016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2883/9581/files/17441310969.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000610c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610C 4780 bytes
SHA-256: ef8c024ba3c307c6a832c03e8e9ac736ceedca399d558b2e13fdda672bcf689e
font_01_sfnt_off0000714b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714B 9828 bytes
SHA-256: f5bbd3834217d02799c4044ec4aefe2b8c6e85b467b3ddcb8383fa5f208b2a56

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