Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea793c76315bca1…

MALICIOUS

PDF

74.9 KB Created: 2021-03-12 11:29:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4172fc90c6738f1a7f1fc57f59e90200 SHA-1: df842a1babbd3074657772ecbf9f3458a30e6f98 SHA-256: 1ea793c76315bca1c490582400c1eac11cdae99a85995f1ffa57b566987b4ecc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'resalured.ru', which is likely a phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/strik?utm_term=fm+22-102+pdf PDF link annotation
    • https://xitupiwe.weebly.com/uploads/1/3/4/4/134489196/sazawavojiberog_pukalowubijaji.pdfIn PDF document text
    • http://13millions.store/sherlock_holmes_2_full_movie_download_in_tamiliq4u7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457014/normal_5fcebbc12b8f8.pdfIn PDF document text
    • http://lnstagramverifiedbadgeshelpcenters.net/house_shaped_browser_button_crossword1b2al.pdfIn PDF document text
    • https://bixikobitil.weebly.com/uploads/1/3/4/5/134525497/8950612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368748/normal_6031357717336.pdfIn PDF document text
    • http://reznitskygallery.com/zorevexizpt5b.pdfIn PDF document text
    • https://zefemebok.weebly.com/uploads/1/3/0/7/130775969/9034a1cc3bfdc2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405638/normal_601a015612544.pdfIn PDF document text
    • http://wwwbcpzonasegura-viabcp.com/iomega_storcenter_ix2-200_installation_cdy4b4j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405179/normal_5ffff691323cc.pdfIn PDF document text
    • http://storedubai.shop/emergency_meeting_giflbbwn.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/xakapudakadu/piano_sheet_music_for_hallelujah_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5684d7c7-7818-4a05-86d9-faad93d03f7e/nutone_central_vac_hose_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/why_is_my_lg_washer_saying_ue.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/can_i_use_my_linksys_router_as_a_range_extender.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/joshua_fluke_resume_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c03c774-2c61-4868-9c6e-eb78d5646c06/darod.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_off0000e949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE949 4984 bytes
SHA-256: a7b474f2e68b47f6435f5e620741da68e7f48977602e7a7a54ccb900b6553c48
font_01_sfnt_off0000fa46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA46 10732 bytes
SHA-256: 85128db6c62c67367ec7ff5d3e02efe83987b27a53a363affdc601d47980bca4

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