Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05429024ec97179…

MALICIOUS

PDF

88.1 KB Created: 2021-03-07 05:26:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6ba3d2f5b41c60163a2c73178059cb19 SHA-1: 9feffe77388629bae42cb021437882e792b343f8 SHA-256: f05429024ec971795b64c221b9b712a949e6ae1f93b698fe25747c7a2b69a477
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The primary external URI identified is 'https://gimoguvi.ru/wix?keyword=vidanta+puerto+pe%25C3%25B1asco+map', which is likely the intended destination for users tricked into opening the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://gimoguvi.ru/wix?keyword=vidanta+puerto+pe%25C3%25B1asco+map PDF link annotation
    • http://dodemawaj.iblogger.org/brother_hl-_l2321d_specification.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/ee7589ec-0c42-4c5a-96fd-7bd3bd986f34/39614636582.pdfIn PDF document text
    • https://0503187d-52cd-4237-9521-a3cb9bf551ae.filesusr.com/ugd/5bb01c_67b778e9bc974e899489b593eed176b5.pdf?index=trueIn PDF document text
    • https://e5baaea7-7007-41de-9367-4ebf3ed55875.filesusr.com/ugd/8e1900_02629b3376f04f3fa6e49285a707f5f8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/non_destructive_testing_methods_in_mechanical_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/aggiornamento_android_pie_honor_9_lite.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/28855874615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52517dd7-51c1-4447-9b26-24f8470a4e06/panefexoluwetobenivebu.pdfIn PDF document text
    • http://bekabugi.epizy.com/anganwadi_form_bihar.pdfIn PDF document text
    • https://30c74dc1-c3f2-4e71-8253-1ec84f3b94e1.filesusr.com/ugd/b8c6fa_51be91a14d6b49d6aa3e0cf3e589bedb.pdf?index=trueIn PDF document text
    • http://zudosikewemer.epizy.com/54130612923.pdfIn PDF document text
    • http://pufovipejofag.epizy.com/manual_change_detection_angular_6.pdfIn PDF document text
    • https://0e098354-e5d1-4afc-9be7-763a70ae5e44.filesusr.com/ugd/ef253e_3fad45d3cffa40f4a675495bb09311d9.pdf?index=trueIn PDF document text
    • http://xaxotuk.epizy.com/22340840650.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d44bae9e-e9a8-4c2e-ac54-36ff5e5416aa/zotigufetewuxib.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/acr_report_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07d0687d-9891-446f-925b-b7bebb679416/literary_theory_and_criticism_notes.pdfIn PDF document text
    • https://535a9070-e28a-464b-adc5-c02ad08be00b.filesusr.com/ugd/9df9d6_ea83c0146818488daeeec35026a541b7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e00a8f60-bb49-4fff-8c82-7aa6e600552e/touch_up_define.pdfIn PDF document text
    • http://viwukapatajomi.rf.gd/used_garmin_220_tracking_system_for_sale.pdfIn PDF document text
    • https://181f3bdf-810f-4c34-abb3-9f3362228cd6.filesusr.com/ugd/30415f_c04b372db6db4a7990ac7f9f940ec944.pdf?index=trueIn PDF document text
    • https://bf6af823-cb0d-4ee8-9d5b-4f0b1de5ed24.filesusr.com/ugd/9eb187_5a11a2d612dd412696dfd2ba76ae0e80.pdf?index=trueIn PDF document text
    • https://9e7b01ce-91ce-414a-93c5-ade8df4b7359.filesusr.com/ugd/cfbfd2_f4155d3c466a4982907a6ff4a20d0eee.pdf?index=trueIn PDF document text
    • http://dixuzudes.epizy.com/mojazudovujipexolemam.pdfIn PDF document text
    • https://564fd4a8-0e6d-4f97-813a-a14a70c45316.filesusr.com/ugd/f90d28_f3b280f0dac84971a11d2dc0e39d2109.pdf?index=trueIn PDF document text
    • https://4b4ea461-5266-411b-8735-d5290551f550.filesusr.com/ugd/7fedcf_ec42211c1f774809a6296e36e69d3a88.pdf?index=trueIn 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_off000118cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118CB 5364 bytes
SHA-256: 74c1151612f654a8536f06623010849d8a2310898dfe1935dfb434456a422bed
font_01_sfnt_off00012ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB7 11832 bytes
SHA-256: 585c58a1d98b6ead14e7a6b2dd2f7c35db4bf9a739c57a0c37b1bed53d0e4dea

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