Malicious PDF — malware analysis report

Static analysis result for SHA-256 f102b50697da5290…

MALICIOUS

PDF

42.0 KB Created: 2020-07-27 18:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 613fccb4316406ed7070b1ba47eec49e SHA-1: 6ab636ffde6488f5875b57073755abd095f3cbd3 SHA-256: f102b50697da5290ccc283aea68feba1b98cd6f50d453734211b279de8cc1d5e
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used in SEO poisoning or link farm attacks. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=phrase+versus+clause+worksheet', is flagged as a known malicious redirector. Another embedded URL, 'https://cdn.shopify.com/s/files/1/0428/2885/7503/files/91417596169.pdf', is part of a larger set of PDF links found within the document.

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=phrase+versus+clause+worksheet In PDF document text
    • http://files.kocyener.com/uploads/1/3/2/8/132815791/8119781.pdfIn PDF document text
    • http://files.mobile-massage-sydney.com/uploads/1/3/1/4/131406749/5d4c81.pdfIn PDF document text
    • http://files.dangelorealestate.com/uploads/1/3/0/9/130969004/sotarinizokin.pdfIn PDF document text
    • http://files.koreanatoledo.com/uploads/1/3/1/6/131607063/xiluvexedosa.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/1/0428/2885/7503/files/91417596169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/saxakowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/73363311778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/1945512618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/25943792860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6188/6627/files/dudadajen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/xumezajajapeterodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/30700905503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/vovokifoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9910/2115/files/pedifovisimajarunenesubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/zukexuxukobufuwuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8175/1964/files/89782456408.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_off000067de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DE 4832 bytes
SHA-256: 903b6383ef64e134d16ae6a7d4bb1d2e925a19daa59e8a92801595c8cb9dcdb7
font_01_sfnt_off00007873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7873 10024 bytes
SHA-256: b5c56891203390383db68bfe1ec34675961775e849e86b6a22ea73011e106937

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