Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a81d1147867dac…

MALICIOUS

PDF

41.2 KB Created: 2020-08-19 04:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be6ff6eebafa60200aacefe82e713990 SHA-1: d09405a7a7126afb01bb8e8d6abf65ca902b28e7 SHA-256: 75a81d1147867dace59fd99363e42cd08b4bd9c29792222c40f1989a1a71eec5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness. The embedded URL 'https://ttraff.ru/pify?keyword=mekanisme+kerja+benzoil+peroksida+pdf' is identified as a malicious redirector, likely leading to a phishing or malware download page. The document body itself contains obfuscated text and URLs, further supporting the malicious intent.

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=mekanisme+kerja+benzoil+peroksida+pdf In PDF document text
    • http://fevade.pathwaystohealng.com/uploads/1/3/0/9/130969679/polenidi_taxapokuxe.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/1/0431/6200/9755/files/botany_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/8470434808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/american_english_file_5_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/internal_audit_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1524/8794/files/vupusalisisewunururewuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4555/files/vutupupim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3826/0898/files/discourse_analysis_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/tuwujegutifokutamavole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/temperamentos_transformados_pelo_esprito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/werilupuber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0755/5222/files/how_to_add_attachment_in_mailchimp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8414/4037/files/arabic_english_dictionary_hans_wehr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bepojarovizezeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejolezogumulugadajo.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 1

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_off0000631a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631A 5524 bytes
SHA-256: 927672553b66578c8a03d5b9f09d9671bc798647f49debcb35d828408908ac4c
font_01_sfnt_off000075cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CC 9916 bytes
SHA-256: b403015a05a299b7b2d39faaf88d4a8e5cc0bb7038ab8a89a146524e3a3374da

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