Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d393566f4369601…

MALICIOUS

PDF

45.4 KB Created: 2020-10-28 23:36:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 2d0160c0607137bff519bbd0ea3be708 SHA-1: 75abd2b55d71e4cf8cdca4d19580608dbdbe4470 SHA-256: 5d393566f43696012e68d6d5d82b9a2b945ce03bdf8e6a80d347c442bf108633
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised as a search result for an academic topic. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's part of a link farm designed to distribute malware or phish users. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/wb?keyword=gardner In PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/2792466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389074/normal_5f98667079000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f942861bf90e.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/porawi-lodem-fowavogukuti.pdfIn PDF document text
    • https://xajapeni.weebly.com/uploads/1/3/4/3/134341300/994e211235ea3.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/f2f4ac57e0.pdfIn PDF document text
    • https://reregixezoxo.weebly.com/uploads/1/3/4/4/134461721/9968355.pdfIn PDF document text
    • https://susetizumuru.weebly.com/uploads/1/3/4/4/134461935/761f5ff16c3.pdfIn PDF document text
    • https://silemixijotin.weebly.com/uploads/1/3/4/4/134463531/9ead12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410431/normal_5f976c41c044b.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/4a7ca0.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/gewisetug/24914203941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4259/7795/files/susirabuzato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2977/7565/files/99612258790.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/holistic_approach_to_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/evolutionary_theory_of_origin_of_state.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/ischemic_heart_failure.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/national_legal_service_authority_act_1987.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/canterbury_tales_the_clerk_s_tale.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/5529309458.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/cement_plant_book.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/8205716215.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/79071203688.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_off00007142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7142 5540 bytes
SHA-256: 3939050499a783a9b187709493d0c9415c7923dde6e92b9f70d0e5f9e72a0a98
font_01_sfnt_off00008414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8414 10556 bytes
SHA-256: 98b1423fb84124e57c6aa47e61ea82e28b5853551ee61d38b4d0d8bcb3d116c3

Open this report in the interactive analyzer, or submit your own file for analysis.