Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e5d3a54ce1fbcf…

MALICIOUS

PDF

67.5 KB Created: 2021-02-14 13:55:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6dcea351ec7c50651cdcbdb9efbc1e0b SHA-1: c9fab1413499a6e35cdc7bc207cfcb41a01ad90a SHA-256: 36e5d3a54ce1fbcfcccfc5bd2b7aad8d11b85c075fae5e2e9a0c5bd87d8c8a24
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jacksth.ru/wix?keyword=donald+duck+ringtones+free+download PDF link annotation
    • https://cdn.sqhk.co/mamevugixej/hiIPDuQ/lunudelaremotimetuwep.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/wufazamijoroj-besowuvaf.pdfIn PDF document text
    • https://lemefiware.weebly.com/uploads/1/3/4/0/134017231/4779018.pdfIn PDF document text
    • https://nolizusumebixaz.weebly.com/uploads/1/3/1/4/131438071/zusovolizekaj.pdfIn PDF document text
    • https://dusonibegoxat.weebly.com/uploads/1/3/1/3/131380688/9688648.pdfIn PDF document text
    • https://fanizoliboligom.weebly.com/uploads/1/3/1/0/131070566/3662094.pdfIn PDF document text
    • https://witowufagefalob.weebly.com/uploads/1/3/0/7/130738848/jipokogudamog.pdfIn PDF document text
    • https://bafijesepuj.weebly.com/uploads/1/3/4/0/134041147/kaxudapan-ruvutuxe-dozinazakuja.pdfIn PDF document text
    • http://tufataf.22web.org/riwemudegopigorusipiwofes.pdfIn PDF document text
    • https://rojogude.weebly.com/uploads/1/3/4/3/134396813/linevudomovuz.pdfIn PDF document text
    • https://cdn.sqhk.co/jatizaru/jaIOjfR/leduxazisepofofudonur.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/5df8e48d09df.pdfIn PDF document text
    • http://lufesemi.iblogger.org/77425991546.pdfIn PDF document text
    • https://cdn.sqhk.co/serojimo/yjfMvK6/nafuxur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rejusozutugagur.epizy.com/dexevolalotemefiv.pdfIn PDF document text
    • http://jobasovuworijun.rf.gd/sql_server_2014_trial_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/43246374997.pdfIn PDF document text
    • http://lizolubemerawi.epizy.com/geometrical_isomerism_definition.pdfIn PDF document text
    • http://xuzinom.epizy.com/77795333646.pdfIn PDF document text
    • http://fabovodowep.epizy.com/vugekelujizolifututera.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_off0000cc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC29 5344 bytes
SHA-256: a6b6791cdccb70cca3b97ec9b7eff4c2748e72bfbdd49f1e9b10de2fbc162017
font_01_sfnt_off0000de82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE82 10000 bytes
SHA-256: 6734a1c059f8b3df0de9051c0b5c0ab0c741c0f2efb345d438ebca0d55cd4469

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