Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d5ad8bfe453b8f3…

MALICIOUS

PDF

40.8 KB Created: 2020-08-14 19:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7c1b0b115a99ba24cdc2987bae37de7 SHA-1: 35c78ac94101ad0c69c7c459312ad3e566476851 SHA-256: 0d5ad8bfe453b8f3d0ff8c4e5bdcf5da4c16152b982ba42df46a586e6bd64f25
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a primary redirector identified as malicious. The document body, though heavily obfuscated, contains a URL that points to a known malicious redirector, likely intended to phish credentials or deliver a payload. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=samsung%20m2070w%20user%20manual%20pdf In PDF document text
    • http://files.shellbackcustoms.com/uploads/1/3/1/3/131397940/d6f2a990a29ad9e.pdfIn PDF document text
    • http://files.baileylynas.co.uk/uploads/1/3/2/6/132681409/6d4d6e4b5.pdfIn PDF document text
    • http://fowakitaw.zionlutherancc.com/uploads/1/3/1/3/131383363/47e4a70a.pdfIn PDF document text
    • http://files.shaltmira.com/uploads/1/3/0/7/130738933/gakolape.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/1/0433/0687/7080/files/kilezolesosobusafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/69809303214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/15406182883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2231/files/77646161500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/27596209378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/diketakefuvobanewitovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8652/6102/files/37523882088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/vadujinobono.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_off000054fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FD 5908 bytes
SHA-256: b2d6bfff6acd14ee43538765fe1f103315da177153678594e62e121748cba4b8
font_01_sfnt_off0000690e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690E 2268 bytes
SHA-256: 7f38c7bd3076d5ec567b373f8788658f617417f44aeaffad1c2d563936ecbb0a
font_02_sfnt_off0000731e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731E 10264 bytes
SHA-256: 36159988b7b7ea515ee97de228e69aa69eb130fe086d74450fd1b9d2fc8c2e88

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