Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d5a6ad3029ca43…

MALICIOUS

PDF

42.3 KB Created: 2020-10-27 01:09:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 76b303e8bd3e3a4c0e7c6ef566cb7b49 SHA-1: ba5a87b1cbaf42d08816532c6eab536fb8a586bc SHA-256: 76d5a6ad3029ca43c97e2202f6ad8c5906f52562f31ad7e3373610054c188ded
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.me/123?keyword=grand+lodge+of+iowa+calendar In PDF document text
    • https://limikasideg.weebly.com/uploads/1/3/4/4/134446439/fd00b2662aa.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • https://tifedufuzitiji.weebly.com/uploads/1/3/4/3/134353288/8dee8c93bbf.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/2daec3eb3c.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/5253858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382953/normal_5f94a31979903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_5f88a4606d60a.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000058e5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000058e5.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00008d6e.bin)
    • https://uploads.strikinglycdn.com/files/384d8510-dccb-485c-aca3-0a7e3235c841/86268246786.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90b3a338-5e48-4d33-877c-37f20b5578f9/xolamazemubekefep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd97ec3c-e386-4060-9949-39e4008e7c76/19744734552.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca04a75d-51a1-4161-a532-429a5e78f1cd/crash_bandicoot_relic_native_fortress.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4952/8727/files/student_perception_survey_shelby_county.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/7318818782.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32ffdd9d-8bba-43df-be1f-77444e6106b3/panosisabiwali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9793181f-cd98-46b7-adae-caeadd1aec21/degenoxobitesefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d4712d5-06fb-43f3-b5c9-d5eaa949c8e1/suvulaxama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c322117-54bd-46a6-a4be-2996d39af74f/dojumagen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86bb5e4f-049f-4d14-bae2-72c57defddc2/20964348506.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/birexiradavaninafojezi.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/joxuremeniketidusuj.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/58944372337.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/l_alchimista_paulo_coelho_download.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 extracted file (font_00_sfnt_off000058e5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E5 4840 bytes
SHA-256: ebbf0de3434a509e18b6fd2689e52dbbba8f2b0f93efb0332341bb4014ca8b53
font_01_sfnt_off00006977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6977 10996 bytes
SHA-256: 198254bfc114ed89eb17c9d7eece616e97fa7d0f11478655d4c4f5f08d7f1ecd
font_02_sfnt_off00008d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f