Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9573db3a1dabbc8…

MALICIOUS

PDF

48.7 KB Created: 2020-08-23 21:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4405510ec6d18ecfe73d6837998cf643 SHA-1: 90a9a8139b437f5cf30ab0810380f74fa6383032 SHA-256: f9573db3a1dabbc87e3cbf96a55138812dcf72f71ed2a91b189bc1640796893a
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure via the URL https://ttraff.cc/pify?keyword=sepsis+3+guidelines+summary. This suggests the document is designed to lure users to malicious sites. No scripts were extracted from this sample.

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=sepsis+3+guidelines+summary In PDF document text
    • http://files.intoactionsoberliving.com/uploads/1/3/0/7/130776273/9042750.pdfIn PDF document text
    • http://files.lidgettandbeyond.org/uploads/1/3/1/3/131398134/rodenak_jugagisedopujon_banere.pdfIn PDF document text
    • http://poderidi.thejerrywelch.com/uploads/1/3/1/3/131379730/murajukafe.pdfIn PDF document text
    • http://tudogot.hilltopangusfarm.com/uploads/1/3/0/7/130738971/3441134.pdfIn PDF document text
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.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/1/0436/0660/5987/files/venevedomeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/novujisabaxojejebab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3383/7224/files/wubeteduwep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7809/6798/files/apple_balanced_scorecard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9302/files/pibopibinuzipapisukeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3846/6467/files/69913231302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/42737932503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/open_hosts_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/romafuteja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5944/3862/files/album_songs_telugu_naa_songs.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_off0000722b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722B 5648 bytes
SHA-256: a5795c6f6a91e62d49b4c50a768dfe1a54b6d5b593ff296c052272acd244d87d
font_01_sfnt_off00008549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8549 14936 bytes
SHA-256: 231e098d94751d3987c7fbdb9d9e193f68d1d9c4f5026b9ed6af991c925f90d2

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