Malicious PDF — malware analysis report

Static analysis result for SHA-256 576b173da84d520d…

MALICIOUS

PDF

40.5 KB Created: 2020-08-20 14:19:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03ffa4ca65614577b1305821ea575588 SHA-1: 8fdd490de5da83cab14eed22738c9f51852391d0 SHA-256: 576b173da84d520de79a763a401b9ab1cd3676a032208de3cbdbdf8ddd707983
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and a search query related to Android development, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious redirection attempt.

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=android+studio+hide+navigation+bar+xml In PDF document text
    • http://files.nataliegarces.com/uploads/1/3/1/4/131483214/bd680d2d73f4.pdfIn PDF document text
    • http://files.tuffbuiltproducts.com/uploads/1/3/1/4/131437563/ba82a.pdfIn PDF document text
    • http://files.unitedchurchnewport.org/uploads/1/3/0/8/130874231/vunimegisanuveborap.pdfIn PDF document text
    • http://files.ceramirdental.com/uploads/1/3/0/7/130739971/ec9db71a2a7.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/1/0429/5049/2316/files/88026269079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1283/9834/files/social_club._dll_la_noire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/79510109808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/bimezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1373/4563/files/24041507374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1285/6731/files/8292858535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2282/6142/files/76767592541.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 2

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_off00005cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC3 5496 bytes
SHA-256: dea8612c765837b7886ce63f0f8709a638c0917ef60536969ceb0ba9dd840fb6
font_01_sfnt_off00006f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F49 11184 bytes
SHA-256: d3a69acde24e49dd324182cf385e4cdd3f1f059bfbfb54bc6ed62e115866d609

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