Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30ef80041c36e1c…

MALICIOUS

PDF

47.5 KB Created: 2020-08-21 08:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a11026757e2c6bb2f60c0325d37efd86 SHA-1: bef557188c3f37ef50c1a2b75d1b42f79262d0fc SHA-256: a30ef80041c36e1cd04d31164c12e3b51ed36869727a5b7ee0ce5a3fe10931b3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.ru/pify?keyword=writing+skills+practice+an+informal+email', is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting a link farm or redirection scheme to distribute further malicious 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=writing+skills+practice+an+informal+email In PDF document text
    • http://files.nativepflag.org/uploads/1/3/0/7/130775115/9532675.pdfIn PDF document text
    • http://files.countrysideanimalclinictooele.com/uploads/1/3/1/3/131380868/newufutuje.pdfIn PDF document text
    • http://files.birthbeforeandafter.com/uploads/1/3/1/1/131164442/9808467.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/1/0428/9835/8432/files/76957488457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1316/8542/files/17329555587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/the_school_white_day_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/puvepiruzutazow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/salamanders_codex_supplement_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3714/5753/files/jularoleji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9130/4343/files/dark_flame_alyson_noel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5812/6245/files/66084344634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/annotate_chromebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8536/9239/files/acrobat_reader_installer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/74616716177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/adenoma_tubular_con_displasia_de_bajo_grado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/86040371526.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_off00007a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8C 5412 bytes
SHA-256: 3395f8e4a955e85c051d62f7b23579a78e0298c8dde4698c09c765fc61468c8e
font_01_sfnt_off00008cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF3 10408 bytes
SHA-256: c94506ae63954537aceda6171a9cbbbfebf53e3b72de7fd8e01a9cf35175f56f

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