Malicious PDF — malware analysis report

Static analysis result for SHA-256 309507ccd62866ef…

MALICIOUS

PDF

41.3 KB Created: 2020-08-20 22:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a28125710dfa7c157729e20e148c2ce7 SHA-1: 9a4822ffc1b90969b5aa6019707e50bc006ea6c2 SHA-256: 309507ccd62866ef95627284f839f8010e5010f9904ba386221ec185016021a2
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=lost+in+space+parents+guide+2018', is designed to lead users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, suggesting an attempt to obscure the final malicious destination. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=lost+in+space+parents+guide+2018 In PDF document text
    • http://files.yairlivnat.com/uploads/1/3/0/7/130738666/797511.pdfIn PDF document text
    • http://files.uae350.com/uploads/1/3/1/4/131453401/firoj.pdfIn PDF document text
    • http://files.cuauhtemocmurphy.com/uploads/1/3/2/6/132682913/kajedokaxabix_vijov.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/1/0431/7508/4193/files/povixugobasar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/21769291751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/pibulozuruwolusixunukep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7879/8750/files/operadores_mecanicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7937/7830/files/12826695003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6970/9217/files/kavoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4374/7990/files/sositewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/29252904769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/66569819968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/32972608904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/gold_platform_shoes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/kamav.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_off0000622f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622F 5668 bytes
SHA-256: 713ba14c2ef551d2eafa36a796c33600580837feb4d8c83c76dfc5f99202b6b1
font_01_sfnt_off00007585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7585 10212 bytes
SHA-256: 531789e087afbd71bb49ae26696ece826844af626ce82be9c9368896dcbfe9b9

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