Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f911e230ef4d91…

MALICIOUS

PDF

77.0 KB Created: 2021-03-22 00:10:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 388e25d6223088b090d0b6efbd7af9ca SHA-1: e6da7df60ab1b9764d01402bafa13f470b70a48f SHA-256: 46f911e230ef4d914279ae81e8dc60486f9356e50dba0c9adc6cc91f549570d4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'Lowe's assistant store manager interview questions and answers'. The presence of an external URI pointing to 'maypoin.ru' further supports a phishing or malware distribution attack pattern. No scripts were extracted, but the PDF structure itself likely facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=lowe%2527s+assistant+store+manager+interview+questions+and+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413966/normal_60249fd958a8e.pdfIn PDF document text
    • http://xekumaluvox.iblogger.org/54657755406.pdfIn PDF document text
    • http://mavitrade.com/33382707484aqb89.pdfIn PDF document text
    • http://instasurprise.online/644572211532lop0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_604dbca59a1e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425924/normal_5fc72944b32fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500877/normal_60259c297609d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454040/normal_5fdea46f73cec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zewimu/bubble_bobble_descargar_gratis_para_android.pdfIn PDF document text
    • http://badisaxutut.rf.gd/schwinn_spin_bikes_for_sale_uk.pdfIn PDF document text
    • http://vedapasu.epizy.com/kant_political_philosophy.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/sample_conclusion_in_narrative_report_for_ojt.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/how_to_draw_a_simple_anatomical_heart.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/adobe_acrobat_pro_11_link.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a15abced-973d-48fa-a51d-321ce76ec5e6/79753336241.pdfIn PDF document text
    • http://misebupafavo.rf.gd/bescherelle_orthographe_gratuit.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/zutujepikenotilukaduw.pdfIn PDF document text
    • http://jazojogebi.rf.gd/46163837447.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/dupiliropewutulidaturo.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/70001269277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10ebd3d0-d0f8-458b-af4c-669217ffb7d2/19251366685.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/l_t_finance_annual_report_2017-_18.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_off0000f010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF010 5368 bytes
SHA-256: 5efa558ac49c11b92b3d05202e1b98cd3775d3ceb34eeec51dacb5de344455d3
font_01_sfnt_off00010254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10254 10752 bytes
SHA-256: eb6397d6ca424a8d8d16b252d1201af958dbd0644a96d6aa2467f77b5da34aef

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