Malicious PDF — malware analysis report

Static analysis result for SHA-256 be619c8e16890f14…

MALICIOUS

PDF

84.1 KB Created: 2021-03-14 18:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c90bbab9c77ed0e35c3e704635f6c8d6 SHA-1: 5a90839180436a6989a87033c0c214e45c3c11af SHA-256: be619c8e16890f14c0fa9a2c1b1c5d6e8aa76403f244611a4e122a0b75d78759
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, including one pointing to 'druttle.ru', suggests a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=fast+and+furious+presents+hobbs+and+shaw+drive+mp4 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426816/normal_5fec6cfda01c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_604ce024a59cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463830/normal_600c6310c54ee.pdfIn PDF document text
    • https://xejinifinedi.weebly.com/uploads/1/3/5/3/135305438/a49595883.pdfIn PDF document text
    • https://fefirewaw.weebly.com/uploads/1/3/0/7/130775199/1265596.pdfIn PDF document text
    • https://vajinivokesele.weebly.com/uploads/1/3/5/3/135326698/pijamabakel_bukuwi.pdfIn PDF document text
    • http://nixiziloge.iblogger.org/pojibomugujovenasusalod.pdfIn PDF document text
    • http://didavixakodix.22web.org/rd_burman_songs_ming.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zunijakokusageg.epizy.com/bokudulerajagaxetewo.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/sustainability_reporting_guidelines.pdfIn PDF document text
    • http://vedebimefawimad.rf.gd/wejuxenuzakukogi.pdfIn PDF document text
    • http://nozixexegaliwe.rf.gd/omega_excalibur_remote_start_reviews.pdfIn PDF document text
    • http://satekivu.rf.gd/zerago.pdfIn PDF document text
    • https://2aa89031-56ac-4de1-b828-aabe99840ec8.filesusr.com/ugd/cf14a4_047b02625b7845398199693fd1ff9bd5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jivala/zudogimozusagonadupid.pdfIn PDF document text
    • https://89f68ddc-9f98-4e60-8afa-3e0ca6603e9e.filesusr.com/ugd/4725f1_fa32157742d7478f9096644eaf0f84cd.pdf?index=trueIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_687635dc9ff3458abb7282799e36a11a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/tupperware_mini_rice_cooker_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/15133819060.pdfIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_d0f7d3f84e424e14b5283fa771baf82b.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C9 5584 bytes
SHA-256: 63d251cc4c2a32b563e3c531f3f49707edd30a39681e14f7ad6e39d93e46b26f
font_01_sfnt_off0000f6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AE 2240 bytes
SHA-256: e0770b72447bee5174c8991c75bf8663badc62c1f96bd41f913fce08dd24aa34
font_02_sfnt_off000100c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C8 12000 bytes
SHA-256: 64352247933d78a04c2727449e46c9c1cb60feff5f17785276275476a8e390cb
font_03_sfnt_off00012971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12971 17104 bytes
SHA-256: 32de8b58edbae1cee6d02fe613de4550ba65ea3711096ba3f7afde0129ebd03b

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