Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c021cb5dfa4775…

MALICIOUS

PDF

90.1 KB Created: 2020-08-02 14:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8515e60c94d198aed4568ef46b0614db SHA-1: 423dc19be42f3ea4fa1cce190640c70670a83e41 SHA-256: 25c021cb5dfa477527c2fdc604e3d78ff3556e0c448514abc9393f7c5896cae5
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to potentially malicious content, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for popular media content. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further stages of an attack.

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.com/pify?keyword=naruto+shippuden+episode+280+english+dubbed In PDF document text
    • http://files.grcrowfamily.com/uploads/1/3/0/9/130969811/5d780831761.pdfIn PDF document text
    • http://files.keoshalove.com/uploads/1/3/0/7/130739648/2578777.pdfIn PDF document text
    • http://files.seatoskyfit.com/uploads/1/3/1/8/131872269/42246.pdfIn PDF document text
    • http://files.auroralclothing.com/uploads/1/3/1/4/131406344/3264362.pdfIn PDF document text
    • http://files.shanganamorens.com/uploads/1/3/0/8/130874477/968875.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/1/0427/9658/1020/files/71546914953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8350/5562/files/papute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3762/0381/files/gukiriwivikoxig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1565/0980/files/66225896583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2636/6111/files/nixexezelefomeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/zafajunurileroxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8144/9118/files/daxotus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0696/6429/files/95795681562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/trick2g_girlfriend_instagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2291/6520/files/fonadewafesilebutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodowowesibaxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2742/9536/files/jexexamapawe.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_off0000b413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB413 36140 bytes
SHA-256: c306ad48b2dfa4bcdae02a88774b53cd0c3e8f1aa9a026d8cb0a20d387e3d63c
font_01_sfnt_off0001247c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1247C 5800 bytes
SHA-256: 92af240a72bfdcd6d62c3b7bcb8985fb3c1099e78e40e6422d5bdc9e15cbdfa4
font_02_sfnt_off00013828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13828 10160 bytes
SHA-256: 8b283a16194bcfce92543a7ff9f51cbc3cd75c0432e6c32bf542167393cd6bdd

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