Malicious PDF — malware analysis report

Static analysis result for SHA-256 7949abb255c22665…

MALICIOUS

PDF

50.4 KB Created: 2020-08-18 16:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0e49b9d3b77ba18b95c36b89fbeaa9d SHA-1: bc06f58e4af3e3be01e9fdf012ee0700830803d3 SHA-256: 7949abb255c226652e5594c89b577ddbe67d717ff083ef0002268d570b44d8f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links pointing to a redirector service, which in turn leads to a malicious URL. The document body text and heuristics indicate a lure for a 'free employee registration form template' to entice users to click the malicious link. The ML classifier strongly indicates maliciousness.

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=employee+registration+form+template+free In PDF document text
    • http://files.properprejudice.org/uploads/1/3/1/3/131381288/jinawujowekuzu.pdfIn PDF document text
    • http://files.straystreetstnr.com/uploads/1/3/0/7/130775107/nasuketalawavemefu.pdfIn PDF document text
    • http://nozekape.martinreynoldsopticians.co.uk/uploads/1/3/0/7/130739046/sofezenovak_wirerokijaxeso_zitevu.pdfIn PDF document text
    • http://files.jennderango.com/uploads/1/3/1/4/131407802/nirofu-newepatosafo-jatabuwof-zibak.pdfIn PDF document text
    • http://files.knwnapparel.com/uploads/1/3/1/3/131380985/muzazobo-zifetajiwi-misogif.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/1/0434/8670/7876/files/edit_text_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/supudesogixisuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/59451615235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4030/9402/files/tukipulebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/lenasosifenuravitivaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/51518343888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/extracellular_matrix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/zokerixirupojomuvam.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_off0000879a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879A 5280 bytes
SHA-256: c0f03dfb9e127823e41b0e52811cd3a68acd967bf461f24fdcf98b8ef59aebc9
font_01_sfnt_off0000998b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x998B 10244 bytes
SHA-256: 9e74f6ac0aeb9ddf2badd82f6d5fa27960c00b4f50d50709194cafa4ba423190

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