Malicious PDF — malware analysis report

Static analysis result for SHA-256 424fb0f7281f1152…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 06:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a95bd1cc470a073ef1b3bb7e10807a04 SHA-1: 9f691d22e7f9473e583e424002740a5ad8832351 SHA-256: 424fb0f7281f1152b7cbba301ace2f6292796a1b61a8c522b1590e06257c9ebf
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains obfuscated text and a prominent URL pointing to a redirector service. The presence of numerous embedded links, including the primary malicious one, suggests a phishing or malware distribution attempt.

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=dreamweaver+cc+2015+templates In PDF document text
    • http://pivazu.shirleyphillipsartist.com/uploads/1/3/2/7/132712062/nejefijumafug.pdfIn PDF document text
    • http://pukilil.adrianeejones.com/uploads/1/3/1/6/131636725/862668.pdfIn PDF document text
    • http://xuson.myrules4life.com/uploads/1/3/1/1/131164250/zasisemarit-zowuwodimuf-gasugavewelo.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/1/0432/6332/8411/files/kunomewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/2011_audi_a4_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/58851808140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6313/9733/files/anticoagulant_therapy_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/beyonce_video_phone._mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1569/0650/files/bukhari_sharif_bangla_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8742/9781/files/categorical_syllogism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3997/2773/files/briggs_and_stratton_outboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/51901635843.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 3

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_off0000625a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625A 5680 bytes
SHA-256: fc2eb127607356574955c74200202a175241432600b6dc9bbaed8108c7bcceb1
font_01_sfnt_off000075b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B6 9964 bytes
SHA-256: 3e14a594ec053c2d8ad32cbddaa006f7f813219fc876e1d326ed136ce9538a9e

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