Malicious PDF — malware analysis report

Static analysis result for SHA-256 79570716b91b7c8d…

MALICIOUS

PDF

52.8 KB Created: 2020-08-06 21:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 908034dc50caa4fbc91d8ab131f4149e SHA-1: be5b873f32910b2c8bbedf7583c7c6c5dc0700a0 SHA-256: 79570716b91b7c8d2f67e932a097e88771390c45cc9b91d393f56f030dcb253b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service at 'ttraff.com'. This service is known to lead to malicious content, likely a phishing or scam page. The document body and embedded links suggest a lure related to 'Byomkesh Bakshi books pdf', aiming to trick users into clicking through to the malicious redirector. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.com/pify?keyword=byomkesh+bakshi+books+pdf In PDF document text
    • http://files.rmxelite.com/uploads/1/3/1/3/131398008/gesulapugas.pdfIn PDF document text
    • http://files.allanlacoursiere.com/uploads/1/3/2/6/132681544/5cfecaacbf0ff0a.pdfIn PDF document text
    • http://nimefem.atayloredapproach.com/uploads/1/3/0/7/130775432/nujewunopilosefefuno.pdfIn PDF document text
    • http://files.fccmorehead.org/uploads/1/3/2/6/132682663/rixiregek.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/1/0433/9915/1768/files/35097274343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/90591578987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/great_writing_3_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3502/5831/files/union_budget_2020_19_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/gtd_david_allen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/82220885706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/50490515288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9616/0921/files/36443965300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3390/2760/files/30987023207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/zixodixomisarefidosowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/88389631442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1141/4939/files/87356237348.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB7 5508 bytes
SHA-256: ff4cfc9581d5d20bf2647bdf8fe7eab91e3fed8f82e0efae33ea979348dd2f6d
font_01_sfnt_off00008d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D53 1936 bytes
SHA-256: a8ba320a0ac8a73a5a8cc2c47ba30bd151ec5f51af4d5ac0b9daf85eaa8f1301
font_02_sfnt_off00009698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9698 15168 bytes
SHA-256: f475b90ede0a69d97d31934d0c140c77e247dd0e1f1b5429ca47daf734b92352

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