Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f14ca7766eaa29…

MALICIOUS

PDF

53.2 KB Created: 2020-08-24 19:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b16f3730435aa2c9c78ddcd59802f87 SHA-1: 10bf039790b2a72a82e826d3dc8939fc261ed146 SHA-256: a5f14ca7766eaa29bfbee010dc43c43368b7aa51943f5822b0c5e990cbd1a67d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body contains text related to 'Woocommerce one page checkout plugin free', suggesting a lure for users seeking this software. The primary malicious IOC is the redirector URL, which likely leads to 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=woocommerce+one+page+checkout+plugin+free In PDF document text
    • http://files.quickfitkit.com/uploads/1/3/0/7/130776083/litezobokelepa-datom.pdfIn PDF document text
    • http://files.mindfuldemocracy.org/uploads/1/3/0/7/130776257/rasot-datugibisakose-kebezijojeva.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/1/0435/1826/3464/files/234215140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6051/7271/files/aecom_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/hathway_cable_tv_packages_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1519/1958/files/bozizajixijabozixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/pathophysiology_of_heart_disease_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/speak_now_4_student_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/50958034832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/pathfinder_bestiary_box_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5902/5822/files/pajoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/84070763002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/kusirunumemu.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 7

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_off0000912f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912F 5328 bytes
SHA-256: 94fef27dfd2b20ab41b2b02c14b6650d6c390f4e18fd508cf11b3874b410ebbf
font_01_sfnt_off0000a32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA32E 10752 bytes
SHA-256: 5a84c76993d817af5aadb96b2b8fde45d5ed7e2ce1a707819bbee26c3566518d

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