Malicious PDF — malware analysis report

Static analysis result for SHA-256 191bad3f68ed4e74…

MALICIOUS

PDF

43.4 KB Created: 2020-10-24 00:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 38c4cf9ece1e6afa6f729122e827ee80 SHA-1: 02d5ac0dc25e020f9c8d3b46cdb8443b9e9318c1 SHA-256: 191bad3f68ed4e74769f39b6378e234d17b99767af307dafe1b14e36aa3249bc
194 Risk Score

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.club/123?keyword=mhfu+guild+quest+guide In PDF document text
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/3518902.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/pofexotokonadu.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/4325681.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/delelides_dasexurekiwar_jajumab.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/luzisovilisav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/australia_map_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/ancient_history_of_india_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/99565478786.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/buku_agama_islam_perguruan_tinggi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8073/5138/files/gutomodezofaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6444/8955/files/vupimobiwofefadib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9151/8374/files/xelemamazojutilejima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8da8ea5-fe6e-4b4b-ad52-638b2a5b7e92/5148341867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5254d58d-8b48-4fee-954b-0a18e42f3c5d/buick_lesabre_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78db09cc-518b-4588-a24f-ae90643a40ad/60393864818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2e3a88f-7613-4820-bfb8-bde3e9fc0b2e/bmw_self_driving_car.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74867258-fb00-4f58-aabf-bbdbb052a09e/haier_vertical_freezer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0126/5566/files/frigidaire_dishwasher_troubleshooting_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7882/3317/files/7940585978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1850/8215/files/46223573950.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E8 4992 bytes
SHA-256: 67359334446062ee20e19b42715b8b279dd4ff7231b4af0fa5a43597efddde29
font_01_sfnt_off00007af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF1 11024 bytes
SHA-256: 7cfd33f8f26ff4bcbcd26eac369a0dd42afb82abba2adf9fa37b51b8b0abcf3c

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