Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f02a03e16d745a…

MALICIOUS

PDF

65.7 KB Created: 2021-03-03 05:28:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 47b2df2702d5c38b808b72e4b3310870 SHA-1: b2bf23341b5e4914b4082b17fda7bb536a6ab564 SHA-256: 42f02a03e16d745a4db4c874d233e66abb9b01606fa9f090be0c787e142c1ce6
126 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with a primary focus on directing users to 'lozipotod.ru'. This URL is part of a link farm hosted on disposable domains, a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://lozipotod.ru/award?keyword=john+g+lake+sermon+index PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470526/normal_5ff50898e2d69.pdfIn PDF document text
    • http://ligugiban.scienceontheweb.net/sony_str-dn850_test.pdfIn PDF document text
    • http://gozatelaji.22web.org/android_wifi_symbol_meaning.pdfIn PDF document text
    • https://xujopikaxatanow.weebly.com/uploads/1/3/4/8/134850499/0651979df8108fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391611/normal_6005a7f139b1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465548/normal_603326718ae5d.pdfIn PDF document text
    • https://viledilexemapol.weebly.com/uploads/1/3/4/6/134698440/c457b3f.pdfIn PDF document text
    • https://mazanotofubemiz.weebly.com/uploads/1/3/2/6/132681192/085bde59.pdfIn PDF document text
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/sodet_zaligalodugen_tonilomurefom.pdfIn PDF document text
    • http://tubipiguposazi.22web.org/puvazerofumubu.pdfIn PDF document text
    • http://pawaridifos.iblogger.org/xawimubexon.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/at_what_temperature_is_fahrenheit_and_celsius_scale_the_same.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489843/normal_603bffb679915.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://riboparewi.rf.gd/does_water_have_feelings_experiment.pdfIn PDF document text
    • http://bopebewi.epizy.com/administrative_office_management_complete_course_free.pdfIn PDF document text
    • http://walevuzu.epizy.com/rukeg.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_off0000c6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E7 5360 bytes
SHA-256: c4777e7e82e22f8afd563d82c4392faa570555df82b760a94e16202fa0042d4b
font_01_sfnt_off0000d8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F4 9680 bytes
SHA-256: 5067f94f8d0123f2182a2ee0b8c6f3f4dddabd8a4e1eb8bb8fb227a0a79a2140

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