Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c275fda5aa6baa…

MALICIOUS

PDF

53.6 KB Created: 2020-08-20 10:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc3a67557b4cd11622454c215fc9f12b SHA-1: 286191bb0553e1827908980ca85f9e1c05450571 SHA-256: f5c275fda5aa6baa98b660b73632779697a5541d1780a7e4b1b494b732bf443f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves leveraging these links to direct users to potentially harmful content, obscuring the true destination through the redirector.

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=anxi%25C3%25A9t%25C3%25A9+de+performance+adulte In PDF document text
    • http://nemax.polevaultacademy.com/uploads/1/3/2/6/132680874/9881074.pdfIn PDF document text
    • http://files.brewhouseboutique.com/uploads/1/3/1/0/131070336/5490711.pdfIn PDF document text
    • http://files.backcountryexplorers.com/uploads/1/3/0/7/130775436/caa67.pdfIn PDF document text
    • http://files.kcmetalsmithing.com/uploads/1/3/2/6/132681352/mobig.pdfIn PDF document text
    • http://files.cabravets.com/uploads/1/3/0/7/130776500/fepevojasiremoreg.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/1/0437/7011/8302/files/85502730209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/11587296311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/android_navigation_architecture_component_example_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/sitasifelawijamuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/zuwofofobon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/denejezizawefepasirivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2558/8639/files/assembler_photoshop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/rozevudumojugodedupowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/45431935106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5837/8392/files/ximuxonajojivekumero.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C17 5204 bytes
SHA-256: 1365b98f85356b7bc9700fb7c84c5cba94a5e52b5a73849a771a58a8b05453a7
font_01_sfnt_off00008d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D65 14572 bytes
SHA-256: 95087336bdf9e3d780f07a86e729d537460acff735cd75f5d569595d94771af0
font_02_sfnt_off0000b903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB903 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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