Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e638fa0061bd46…

MALICIOUS

PDF

58.3 KB Created: 2020-08-02 11:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5c6013fcd5fa3e6879c4c088719e051 SHA-1: c58d8718e00df8bb12cb78be15f2d611cb1b5a12 SHA-256: 46e638fa0061bd4611ce197874c6be90f8a9676df8924fa5d382f9c3ca2930a6
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'free pdf' and a URL that aligns with the redirector heuristic. The ML_NYX_PDF_MALICIOUS flag further supports the malicious nature of the file. The primary attack vector appears to be luring users to a malicious site via a deceptive link.

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=the+coldest+winter+ever+free+pdf In PDF document text
    • http://files.onlinerehabilitation.org/uploads/1/3/1/0/131071037/45f7b.pdfIn PDF document text
    • http://files.pjeterkoleci.com/uploads/1/3/2/6/132681938/f414f68e3faf.pdfIn PDF document text
    • http://files.theclevelandhike.com/uploads/1/3/2/7/132712514/67f66.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/1/0431/9186/1412/files/99882397304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/86831132799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4999/2860/files/dasubojajedujokisagepot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/14652116683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/36161421766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/wagimux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/53750977135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/tatufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/jabavasab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/29294435621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/old_school_runescape_splashing_guide.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_off0000a6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A2 5136 bytes
SHA-256: 65d4857b9647989fca7da3d3d1ad2ff4a0860b4f263c8b626b9595f213c8e86d
font_01_sfnt_off0000b830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB830 10488 bytes
SHA-256: 624819ce693af1eb21cd040f075e239751deb0d4f9d66d1265128ce1d2fcabc8

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