Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee639b2e3ccf190…

MALICIOUS

PDF

45.4 KB Created: 2020-08-12 01:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 876f129ed3eecc065235f080a2089f6f SHA-1: eb69600b8999fa38c260f5a13a7d7764d574b237 SHA-256: dee639b2e3ccf190e862621fc63f10d8058ab8c841c4ce618ac64c6c96c723da
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bhagat+singh+speech+in+english+pdf'. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic. The primary attack pattern involves luring the user to click the malicious redirector URL, likely leading to further malicious content or exploitation.

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=bhagat+singh+speech+in+english+pdf In PDF document text
    • http://files.ec7mmea.org/uploads/1/3/1/6/131606859/zixamusamu.pdfIn PDF document text
    • http://zozap.cyclenewengland.com/uploads/1/3/1/1/131163599/584585b23c2.pdfIn PDF document text
    • http://files.immaculataschool.org/uploads/1/3/0/9/130969735/4334773.pdfIn PDF document text
    • http://files.techniquejobs.com/uploads/1/3/1/0/131071067/6984d4e15d.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/1/0433/1687/1326/files/pl_sql_programming_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/gegevesibixadudibakedutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9007/4018/files/49438549402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/nominal_ordinal_interval_ratio_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2003/3943/files/job_application_letter_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/71830855749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/aws_infrastructure_as_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3495/0304/files/24107656772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/84276616899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8617/6675/files/public_relations_department.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8402/8833/files/23637665144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/pafopefe.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_off0000718b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718B 5368 bytes
SHA-256: 0dc1377726c933c9036c0685afa92c80095c72e5d172fa4a28893f71a4b2ca94
font_01_sfnt_off000083cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CB 11044 bytes
SHA-256: 57fef75482a8717a37ae8fbafff6f7882582924624eb44bbc15ddd2d4ce38526

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