Malicious PDF — malware analysis report

Static analysis result for SHA-256 997b107086476c3d…

MALICIOUS

PDF

52.1 KB Created: 2020-08-06 15:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c1896c474c82914ff42f08d21993afc SHA-1: 8df5b1c6ce83f762840f7a7829edbb978be1f2fd SHA-256: 997b107086476c3da9e03fd09fdc9f743d67e6f65dd8ab2e3347a2cd6486c15a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'social impact assessment pdf' and includes the malicious URL. This indicates an attempt to trick the user into visiting a malicious site, likely for phishing or malware distribution, consistent with an advance-fee scam.

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=social+impact+assessment+pdf In PDF document text
    • http://rudele.blazintips.com/uploads/1/3/1/3/131380005/turekaxotaziw.pdfIn PDF document text
    • http://files.voices4earth.org/uploads/1/3/1/1/131164273/1037397.pdfIn PDF document text
    • http://files.spectrumoilfieldsupplies.com/uploads/1/3/1/8/131856815/a462c8a2ba3b3eb.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/ginowojero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5326/0700/files/xovesejisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/wosimanitela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9586/8067/files/23216728736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/zagoguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6624/2710/files/ramemuwokusebumukivizomur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0815/files/calligraphy_lessons_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/nibaserurolubadin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2700/4572/files/kameduvij.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 4

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_off00008d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8F 5308 bytes
SHA-256: 17b64fcb7035dde420c11c50cc4051facbcd7f62dc61a740aa40de56a7ae9e8f
font_01_sfnt_off00009f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F90 10788 bytes
SHA-256: 98b99ee1b430d19f9325922876a74d3e13394c5eefb83fd1546bbc484044d59e

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