Malicious PDF — malware analysis report

Static analysis result for SHA-256 023a97fc4a2a946c…

MALICIOUS

PDF

41.3 KB Created: 2020-07-29 21:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5fa3ba5e27e78f4f699ec6d7c8d9d0f SHA-1: 50707353273e56d79fe74a5688e0d5ed5d1191a8 SHA-256: 023a97fc4a2a946c5af3e7dea033e1941df1857173a3bce74665ac29af92dcd7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm and redirects to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which is used to funnel victims to potentially harmful 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=bendito+jesus+acordes+pdf In PDF document text
    • http://files.sacramentomarriagecounseling.com/uploads/1/3/0/7/130739392/mofag.pdfIn PDF document text
    • http://files.glennmehrbach.com/uploads/1/3/0/7/130740011/7722565.pdfIn PDF document text
    • http://files.elsewheremusic.net/uploads/1/3/2/6/132681851/4250121.pdfIn PDF document text
    • http://files.banerjeesharmistha.com/uploads/1/3/1/4/131455475/xukemoneseduf.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/1/0430/1740/4573/files/bonuwamuxoluzoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/denapiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/refuserik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/54095368306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/72239020915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2804/3160/files/91266845221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1780/files/waminobanixufelozabezerub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/senisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/16435119179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/99161419295.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 6

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_off00005c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0B 5124 bytes
SHA-256: 27618f1a5fd6bdee53c2d6186e5916c407e7668ec31235a3acc8c4016516f9ae
font_01_sfnt_off00006d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D86 13756 bytes
SHA-256: 0d41912a43fe04f9a2209e895cb1b26dcaba7ff2d3b3cbb4f2223d402166bfec

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