Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6207186184df4d…

MALICIOUS

PDF

84.2 KB Created: 2021-06-10 05:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3353173ed726f6e6c2b32644d84425be SHA-1: 9c5aa63a082225edfce82e8e2692ff02e838f68c SHA-256: ee6207186184df4dae7e6e0e800b9d9a834c1862fd6cb0f5dfba7859810a4e04
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://allytemp.ru/pbw?utm_term=pokemon+unite+apk+free+download PDF link annotation
    • https://gupuvuzuguzi.weebly.com/uploads/1/3/1/3/131379578/30b2aa38ac.pdfIn PDF document text
    • https://zobatovegu.weebly.com/uploads/1/3/0/8/130873738/xutupet-jomisor-wafulikulefef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379732/normal_60044f2153174.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393362/normal_600005c13ad6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_601b1bd62dea2.pdfIn PDF document text
    • https://lijuvimu.weebly.com/uploads/1/3/0/7/130775306/pinugonezo.pdfIn PDF document text
    • https://jexixixusa.weebly.com/uploads/1/3/4/3/134336138/11d0bd05c6628.pdfIn PDF document text
    • https://bigakajufejala.weebly.com/uploads/1/3/4/2/134265656/6163563.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6c3cb580-e867-4694-b0bf-0570ea87c731/wing_chun_training_at_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc8528a3-f814-4aa9-9a67-c676f6017525/tinitaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b7a81bd-77b8-43f7-bec4-5767940d3d0f/26544834817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc5ce11b-58a1-4281-9f69-2fad5cbd69e7/ensayo_el_monje_que_vendio_su_ferrari_introduccion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80fda7d0-6cd5-470e-8e58-53db93ec6327/cobra_148_gtl_dx_mk2_mods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b73650cc-aed1-49e8-b264-d6a0439b00f1/30275237387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8676e0d4-9b1a-42f5-b2bf-e68bc9ce5a69/the_passionate_shepherd_to_his_love_analysis_by_stanza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd08ce4f-0204-4742-9172-9bdd06d48117/how_to_fix_start_button_on_ge_washing_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74fad34f-0bab-4b23-9da0-ca683de0320f/foxconn_n15235_lan_drivers_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c717592c-f591-4cb6-a7ea-089433fc2023/16202935524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f874bdc-39e6-4ddc-bbde-1e268f117128/82824868309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ed9061-523b-422b-be9f-b13474517808/mosatidadoxaleki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2faa48b-1e89-453c-a74c-83325aeae6fc/rinnai_r85_circuit_board.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7796e320-411d-4011-9f6d-ec84a9feccb9/wudivokujodage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/697021dc-5e85-43fc-b57a-d736b593e9fc/32958573889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a398208-aa9e-46ad-ab52-c221557e3ee2/66163081403.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB76 5048 bytes
SHA-256: adca3bcb016d660b53e3fbe29e1f52cef001409fb6ed2f78a3368582bf0ff8f4
font_01_sfnt_off00010c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C99 11808 bytes
SHA-256: 9ffac2d36220f1c52c53b5b65cff78c670746d816b6dc21f0bccf237aaf56ec4
font_02_sfnt_off0001339e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1339E 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378