Malicious PDF — malware analysis report

Static analysis result for SHA-256 23dae65bcd912ed4…

MALICIOUS

PDF

35.5 KB Created: 2020-08-14 00:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 184ceb338247a7c3b97de36b3e2cceec SHA-1: 09ce15a80493e29a2b0c1171a47a6f143a7fd140 SHA-256: 23dae65bcd912ed4f3650e514ec61f7ef089dfea7f5fbdc65a7fc6850c6f3fa1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same redirector URL and numerous other links hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute malicious content.

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=northern+territory+ambulance+clinical+practice+guidelines In PDF document text
    • http://files.next-level-impression.com/uploads/1/3/1/4/131408364/2401374.pdfIn PDF document text
    • http://banate.mysrbc.com/uploads/1/3/0/7/130776542/4421fa1205bdc4f.pdfIn PDF document text
    • http://files.livinginalegalworld.com/uploads/1/3/2/8/132814241/lavujos.pdfIn PDF document text
    • http://files.manningartclass.com/uploads/1/3/0/7/130775518/3417994.pdfIn PDF document text
    • http://files.carimelane.com/uploads/1/3/2/6/132696104/2087689.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/1/0431/0859/7927/files/acr_practice_guidelines_cardiac_mri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/puporutowatitosutobotez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3182/1468/files/zootopia_dvd_rip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7236/3432/files/5572300433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/wesawigaserunepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/85843644642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/96893811797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/kaspersky_antivirus_free_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuvitew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/fizajaxejapig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3789/1482/files/basel_iii_regulations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/adobe_pro.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 5

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_off00004af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF0 5700 bytes
SHA-256: 3113300430a6e81a3d56083bd3423050668d2e8c4072212a52a4e1034ec915bb
font_01_sfnt_off00005e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E29 10004 bytes
SHA-256: a7efe46b505a0ed7e7a3f5413c611f94adb96d61fbbc7aca25ebbcd3b440ca61

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