Malicious PDF — malware analysis report

Static analysis result for SHA-256 509a6d8e9a4a9c9c…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 12:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 44cb8900fce58cf7bb1455e2c75388f6 SHA-1: 2fbaf14706aadbf8d910e4c0028c229f968a3c0b SHA-256: 509a6d8e9a4a9c9c3edf10555d6b6f93ad36af24ddc7f79d65ca7dac49d999cd
134 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=conveyor+belt+technical+data+sheet'. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to trick the user into visiting this malicious site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=conveyor+belt+technical+data+sheet In PDF document text
    • http://files.microcontractor.org/uploads/1/3/2/8/132814768/6613232.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/1/0435/0155/1771/files/49421814260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/zekapixur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/38155157219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8882/2950/files/get_input_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/zikijabolopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/as_time_goes_by_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8584/6933/files/12405941410.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 5232 bytes
SHA-256: ef15d03c7b4b9fbd15919bbb6b1f035ca15cd6592a7a27cb8d58ed71087af7bf
font_01_sfnt_off00007519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7519 10164 bytes
SHA-256: babdd2fdaf56f37f7fd35981fda329fb69092aa32ac81fa3089936ac8b7bb157