Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0200675a7db30d…

MALICIOUS

PDF

82.8 KB Created: 2021-02-21 15:01:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 85377d75c4b06c54a55ea30cb9503fe9 SHA-1: 33602a5af54efdc439cecfb12473521cdeec5a56 SHA-256: 6a0200675a7db30da726db09e2e627118c817b58474306f6f4a92e2d90eb74d7
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is a phishing or trojan distribution attempt. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The presence of embedded URLs and the overall structure strongly suggest an attempt to lure users to external sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/strik?utm_term=la+doctrina+monroe+y+el+destino+manifiesto+resumen PDF link annotation
    • https://limuvowefegepud.weebly.com/uploads/1/3/4/5/134509231/8097f7db445.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407749/normal_5fd798c3d3c80.pdfIn PDF document text
    • https://labifunuvi.weebly.com/uploads/1/3/4/8/134847398/zagepot.pdfIn PDF document text
    • http://biomaniks.website/canon_printer_3010_driver3q372.pdfIn PDF document text
    • http://disconto50.pro/cambridge_checkpoint_science_past_papersj102g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fec79aab0206.pdfIn PDF document text
    • https://tanuroxej.weebly.com/uploads/1/3/4/1/134131309/taxuzafuxi-fowirosugog-mobotamoxog-tuputiwuvat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457008/normal_60167effd84f0.pdfIn PDF document text
    • https://buwabasowo.weebly.com/uploads/1/3/4/3/134353515/nifuteximegibigeler.pdfIn PDF document text
    • https://wisolowiguwo.weebly.com/uploads/1/3/4/6/134630140/de8bf002db6dc.pdfIn PDF document text
    • https://fokinovev.weebly.com/uploads/1/3/0/7/130775288/7359312.pdfIn PDF document text
    • https://dexazime.weebly.com/uploads/1/3/1/4/131437554/7315851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445115/normal_5fe6a5fd343f3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bodalize.epizy.com/restaurant_toil_guide_michelin_aix_en_provence.pdfIn PDF document text
    • http://kemubozureta.epizy.com/bepusemozufujuxorof.pdfIn PDF document text
    • http://gegavolaful.epizy.com/82155990004.pdfIn PDF document text
    • http://nabotiwufonego.epizy.com/trigonometria_geometria_analitica_ejercicios_resueltos.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/tijotubok.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_off000102d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D7 5208 bytes
SHA-256: c2f85060a962fa538201fdd0e23f889a91341441337f2f0e4db7e0ac9aa035d3
font_01_sfnt_off00011487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11487 12028 bytes
SHA-256: f73ae1fbe71822fb305b73ef8812591e2a2d0c86dd84b095179901ade55cdd12

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