Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7b5959d6176dfd5…

MALICIOUS

PDF

45.9 KB Created: 2020-07-31 19:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b558b3fec443efecd59b4942dbef96d6 SHA-1: 3b11e9c92c56edf9cf75f77fcb0ed6dbc843eda8 SHA-256: a7b5959d6176dfd5e387ade0976a5db4f000671b7ba8a60aaeae6b16d592f7d0
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, constituting a link farm. One of these links, 'https://ttraff.cc/pify?keyword=koka+shastra+pdf', is identified as a known malicious redirector. The document's primary function appears to be directing users to potentially malicious or unwanted content through this extensive network of links. No scripts were extracted from this sample.

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=koka+shastra+pdf In PDF document text
    • http://files.jiannamariel.com/uploads/1/3/0/7/130739452/gadatebepeke_pekedip.pdfIn PDF document text
    • http://files.thevillageshala.com/uploads/1/3/0/9/130969915/c9588dc736dd7c1.pdfIn PDF document text
    • http://files.tacticalmitigation.com/uploads/1/3/2/7/132710743/1736828.pdfIn PDF document text
    • http://files.mypointmaps.com/uploads/1/3/2/6/132681882/bipunimozewi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/kobumokojisik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/walefegipixifiveg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/2884953115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6925/1492/files/birosexolozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/67486966155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/11899325936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/93307633637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0313/1542/files/73897560566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/serofozirujegaxemorafov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/bafujotirapizemuwexajus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/diviruwan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000693c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693C 5132 bytes
SHA-256: b9dd62eca6547d9c46751bb8e7143309bca1225ff23df04b5d32407b7ac92b05
font_01_sfnt_off00007aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAB 10540 bytes
SHA-256: f9279a7333f66e059d5b57fb4d3cae2ba8e1522dfe680fcfe9f1ed45d50872f9
font_02_sfnt_off00009efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EFD 2968 bytes
SHA-256: 97551253d73ffc24f3088a179768a23da61ec373fd0e4c77b20d8363debaa2d2

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