Malicious PDF — malware analysis report

Static analysis result for SHA-256 e773479c2cb0c281…

MALICIOUS

PDF

45.4 KB Created: 2020-08-20 18:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9a95c149728d13403bc6c6b5a421739 SHA-1: 558032a486e19c892f5b2b31a98045a1f6b65e0b SHA-256: e773479c2cb0c28120620db83a4f9df1e4b6bcc0a4ddb98a190e7e1ab4deb8a8
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on various domains, which is indicative of a link farm. One of these links, https://ttraff.ru/pify?keyword=babbu+maan+jaan+song+video, is identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The presence of a link farm and a malicious redirector suggests the primary goal is to lure users to malicious infrastructure, likely for phishing or malware delivery.

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=babbu+maan+jaan+song+video In PDF document text
    • http://files.synergymhs.org/uploads/1/3/1/4/131411688/gulavagowomubo.pdfIn PDF document text
    • http://files.justinecelebrant.co.uk/uploads/1/3/1/4/131453068/6106120.pdfIn PDF document text
    • http://jofafu.sippicanchoralsociety.org/uploads/1/3/0/7/130776688/e5fa12c9e9ddd0.pdfIn PDF document text
    • http://raxilor.studiobdancecenter.org/uploads/1/3/0/8/130814535/pepupat.pdfIn PDF document text
    • http://dawazi.3handstephen.com/uploads/1/3/0/9/130969280/b71c931a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7779/4982/files/case_interview_secrets_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/jezopijuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/amelia_bedelia_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22537170944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5480/0802/files/hellosign_embedded_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5429/1354/files/epidemiologia_teoria_e_prtica_mauricio_gomes_pereira_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/repovelulovibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7640/9751/files/billennium_jg_ballard.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D89 5144 bytes
SHA-256: 7972b80c8e035f351ca807466903437528c5dbf2deec2d5962b3919f5716b967
font_01_sfnt_off00006ef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF0 14284 bytes
SHA-256: ab262db11f3bd4cc6adaa5dd9efd08c9e9fdd90d15c641a463ba31404d5090c6
font_02_sfnt_off00009b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B87 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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