Malicious PDF — malware analysis report

Static analysis result for SHA-256 870315082998c245…

MALICIOUS

PDF

48.0 KB Created: 2020-07-30 23:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4fc0455c3db5a9f0e07ad38d73f529d SHA-1: 298e56532db3bb41a492bd4ddc8a330ba666fa17 SHA-256: 870315082998c24571ffa0999fdbc8f9768617ad896d5bfe5031278ebb14f487
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a link farm of 28 other PDFs, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and embedded links point towards a social engineering attack.

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.cc/pify?keyword=research+capstone+project+pdf In PDF document text
    • http://files.benjamincarkeyreplacement.com/uploads/1/3/1/3/131398143/fupirafadexer-rujidu-jotosi-xawabepagip.pdfIn PDF document text
    • http://files.lacrescentareaeventcenter.org/uploads/1/3/0/9/130970004/6485625.pdfIn PDF document text
    • http://files.fullcirclewnc.org/uploads/1/3/2/8/132816036/busabawugud.pdfIn PDF document text
    • http://files.castlesjewelry-gifts.com/uploads/1/3/0/8/130813399/karilu_fojejodijatozix.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/1/0429/1559/4393/files/42197199352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/69053227219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/dewenuwubobedilatarug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/risapagikatufibema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5960/1830/files/jexasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/letaxefarilufalupak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/rakuvipibefirutir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/6284278348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/89618863332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/283821937.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_off00007f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1F 5036 bytes
SHA-256: 799f3680a1a68da04c77e3e60ae14d9dca8966a3a3e810c5a6b495e5e4577358
font_01_sfnt_off0000903a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x903A 10252 bytes
SHA-256: 07f2f7133123ca20fb06ebaa625d4e1500ae67f52f767bdc0e2bb4f7dcbfcc1b

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