Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e081ac1d10105eb…

MALICIOUS

PDF

81.3 KB Created: 2021-03-08 23:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 04b7b1ae2b44ab70b742d96e48dfafdf SHA-1: ad66ef8d652dd16b4b3b816a848bb151dc278fad SHA-256: 1e081ac1d10105ebd50a3fa992b47f98937ca2fd401f0cc92ca769369256fa39
136 Risk Score

Malware Insights

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

The PDF file contains a URL that leads to a malicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though truncated, suggests a lure related to 'painting activities for 8 year olds' to entice users to click the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://bologen.ru/wb?keyword=painting%20activities%20for%208%20year%20olds PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481528/normal_5fda356b27afc.pdfIn PDF document text
    • http://guwelureg.22web.org/diaper_size_guide_huggies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391326/normal_5fe8e47c26437.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375210/normal_5ffa596bcd376.pdfIn PDF document text
    • https://cdn.sqhk.co/gotofebelu/Iifhgjc/42664938507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_6021e84d101d3.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/jejfgcL/jbl_link_music_black_smart_speaker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413005/normal_5ff59c256153f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387406/normal_5fe00b57aca86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501037/normal_60405f9d9c122.pdfIn PDF document text
    • https://cdn.sqhk.co/disanefamu/2gh7UTx/megabus_tickets_to_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/ggihfjc/pocket_classics_cars_for_sale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444882/normal_6002031000d56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469350/normal_5fefd04fed7a6.pdfIn macro / runtime command snippet
    • https://static.s123-cdn-static.com/uploadsIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/teks_sholawat_burdah.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/sotimo.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/1270559002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5499e03-0f4a-427e-ba38-54c79a5e1a78/suketilikazopugavap.pdfIn PDF document text
    • http://vejimugar.epizy.com/onedrive_android_sync_pictures.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeaf8058-d1ac-4029-b539-6ea5f864f4f1/netgear_modem_cmd31t_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/wumuxa.pdfIn macro / runtime command snippet
    • https://uploads.strikinglycdn.com/files/bee4e5a8-d6d4-4f80-9cf8-994934ab30e8/the_tempest_full_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76504fad-375c-4828-91e8-be742f59c69b/laxubewodaduvojekerefag.pdfIn PDF document text
    • http://zesaxisakonona.epizy.com/tixanimeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca964146-fff5-4573-91cc-0477c8c41408/bulking_diet_meal_plan_india.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_off0000ff9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9E 5544 bytes
SHA-256: e7860ade4200d24e37946212516dcf6d1ce06bfbffbc1462771ab17d0c7d1866
font_01_sfnt_off00011296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11296 10912 bytes
SHA-256: bf8b393e44a00bf2267dbc0d6222b3afce562d74e6fe8f5142b8c887a0f807c4

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