Malicious PDF — malware analysis report

Static analysis result for SHA-256 abdd4439dba63a90…

MALICIOUS

PDF

42.9 KB Created: 2020-10-28 08:39:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 3aaf0b1b53616d9031e7b430c3656e71 SHA-1: e28ab7bbacc24be9dbf20a42fa673b2571c4f4a8 SHA-256: abdd4439dba63a9090cc36d57547078d90a5c4a5b665050f3ccf2042890e1530
124 Risk Score

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 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.
  • 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=lazy+boy+recliner+repairman In PDF document text
    • https://fobuxowomi.weebly.com/uploads/1/3/4/2/134235628/49eff742f098f.pdfIn PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/580bbf05e8d8d6.pdfIn PDF document text
    • https://jopomewimedadi.weebly.com/uploads/1/3/4/4/134465277/2467625.pdfIn PDF document text
    • https://sawalodisixujig.weebly.com/uploads/1/3/4/4/134490012/wofenoxizus_vosefufur_jadam_bemumowaxapese.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408858/normal_5f964b3daed3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411931/normal_5f938bae2a024.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420903/normal_5f97626b1c204.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5f93d995a0b76.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/nijijosawuwuz-nenopule-rozafi.pdfIn PDF document text
    • https://wuwuleli.weebly.com/uploads/1/3/1/3/131398564/9528007.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2114ffa1-3653-46fe-ac8e-f7928b898ab8/bizivubulika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39753129-b173-4ed2-b91e-10240d2a45b8/bavatinigolomekov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ded1f4fc-1972-42e4-b7b3-6276a7d5fb0c/minepipemolesafozune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba2395d-837e-4887-a21c-8b45d7b261f7/selavodafepoguvataronupux.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/nvidia_shield_tv_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/l_urbanisme_utopies_et_ralits.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/55795850196.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/60974156226.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/rerur.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_off000067aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AA 5132 bytes
SHA-256: e54b25fda12573988c02b5d2ee4fcfc55d098ad43879e8c496e6367b345787b9
font_01_sfnt_off0000791a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791A 11120 bytes
SHA-256: dd586d683fbe84531bbcc918dda99ac1a0cdf644c6e2b9d63344ca33bd37bd5d

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