Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d516ae9fb94bda9…

MALICIOUS

PDF

39.9 KB Created: 2020-08-22 10:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de61859ee08265e998465021745d4c70 SHA-1: e96a72ae2367fdd5235512f582be764e9807d6e1 SHA-256: 3d516ae9fb94bda98a28b4d983ed225d1476fd9daf9862dfff7890d57295a34c
194 Risk Score

Malware Insights

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

The PDF contains embedded links and text that mimic an admission form, aiming to trick users into clicking malicious URLs. Heuristics indicate these links lead to redirector infrastructure, likely for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or redirection 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=iti+admission+punjab+form+2019 In PDF document text
    • http://files.andyknappmusic.com/uploads/1/3/1/4/131483603/motisurogik_nufosi_jivogewavuf.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/1/0431/1754/3588/files/south_africa_national_anthem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/salivarinipusoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/jerinelemebuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/furepigizopesag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6465/6026/files/petokararip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/84653714655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/confirm_receipt_of_email.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/kitogef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/59902461386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1941/0328/files/delem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/14414904146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8813/3787/files/48848334295.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3D 5788 bytes
SHA-256: 0739a6e7c0ac88693b0b4a676b7c77132f4e318c773f70246d1b930c50f4e2b7
font_01_sfnt_off000070d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D3 10000 bytes
SHA-256: b541cb391ec6a4278a158aa27dfc7468b268de32bbfed4f31eea284ad108e570

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