Malicious PDF — malware analysis report

Static analysis result for SHA-256 1765d89d53cb8a57…

MALICIOUS

PDF

53.3 KB Created: 2020-10-16 00:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a820c782e47a39813f5dfb30fe39fe5c SHA-1: 699d33d0b1d16920d27e643ed4345e4c2b861d91 SHA-256: 1765d89d53cb8a5711bdf6dbff39328b1b0f6bea4d2efeecc0dabf79abcda7ab
132 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/strik?keyword=mengubah+pdf+ke+word+online+tanpa+software In PDF document text
    • https://site-1037261.mozfiles.com/files/1037261/turotatod.pdfIn PDF document text
    • https://site-1040312.mozfiles.com/files/1040312/gerijalovagerabevukov.pdfIn PDF document text
    • https://site-1040988.mozfiles.com/files/1040988/jedifis.pdfIn PDF document text
    • https://site-1038488.mozfiles.com/files/1038488/rukugixiboregonogozafeson.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/5928710.pdfIn PDF document text
    • https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/6757d37bb27.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/nukexifepejisox.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/6812471.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://ritibamubube.weebly.com/uploads/1/3/1/4/131437410/rekubiguru_tesemovofukibi_rerujirujupami.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c61a7b21-7665-4765-8e46-a52849a60444/jewurukosibotedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04da0ad7-4330-41e6-8ad4-609a2b7a4396/82937603537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d04b31af-8101-49bc-9a45-0292c4c57234/depimizirumalajopixoxif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f60f7ae-dbee-4195-bce7-65e92ec04b57/33410181240.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1da9e44-d57c-4e50-a0eb-6a1eb2b412d6/baravizexiferazov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f75f284f-ad38-428e-9ef6-3dc3f0772747/45870862721.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/046af24f-ffe8-4a9a-b168-1239178229a0/5972156274.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CD 5484 bytes
SHA-256: 18644fe1d9ae6c839f787df73ee385b728df280d352215bb7eb8df86ac2a1a99
font_01_sfnt_off0000967b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967B 10276 bytes
SHA-256: 8ec232bef4c288fc6456aa5bc6712c6b600f40cdde4e031b0875a3b72f9f7576
font_02_sfnt_off0000b964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB964 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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