Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00b56efa0f0410c…

MALICIOUS

PDF

93.0 KB Created: 2021-03-07 04:43:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4a2dc7e018e8945f97523e30fbe995dd SHA-1: 0d86633a9dff5081f932bff086a76a8dba732e57 SHA-256: e00b56efa0f0410c8e277b787596133f3fcfb13140f6aaa4f7191b884a3bcedd
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'Maplestory bishop guide 2020'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/wix?keyword=maplestory+bishop+guide+2020 PDF link annotation
    • https://cdn.sqhk.co/sunaxidida/icBIgii/78298361385.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/officejet_pro_6830_printhead_replacement.pdfIn PDF document text
    • http://lipoviwevaja.iblogger.org/what_is_a_grantee_in_property_law.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/dUICmhd/gugazusebiginabanutogojo.pdfIn PDF document text
    • http://ropisunofo.mygamesonline.org/22093403804.pdfIn PDF document text
    • http://samiter.22web.org/pudodos.pdfIn PDF document text
    • http://borejukeluteva.mygamesonline.org/como_agua_para_chocolate_a_que_genero_literario_pertenece.pdfIn PDF document text
    • http://vixerixobo.22web.org/gerugambakkam_guideline_value.pdfIn PDF document text
    • https://cdn.sqhk.co/pokemazikera/4nliaq7/coin_master_cheats_2020_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/nidaruzada/ijgjZMv/download_block_tank_wars_2_premium.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6cf80756-66c2-4d2e-b15d-ff1677cb7115.filesusr.com/ugd/2257e8_3ecb0f1559354701b8a802a2b7da4b7c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3239bf0f-600e-45c0-8f7d-aa63f0061df7/do_percy_and_annabeth_end_up_together.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fc8eee2-0c20-499f-900c-9170edb97d82/harrisons_internal_medicine_20th_edition_table_of_contents.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e665d98f-bd73-4a5a-a51c-db8936add197/59157356250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbcb5c7a-57d9-474d-ac66-8af8c1fa51ce/korg_sv1_88_review.pdfIn PDF document text
    • http://jemibare.epizy.com/bipagelota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33b1733d-3588-461a-ab9e-55e6ba46c538/marvel_deadpool_comics_free_download.pdfIn PDF document text
    • http://rupesujutiwu.myartsonline.com/4957357348.pdfIn PDF document text
    • http://notavopanugatog.epizy.com/lilimakaviwakefis.pdfIn PDF document text
    • https://1d942ef5-affb-47d8-8f99-70a3d187b733.filesusr.com/ugd/3283b0_21964fa62b52466e8760398894500e52.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b99627b-2b78-4376-889e-b279b67ad4e3/polijakedofapesabom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9830956-4233-4f09-86af-540d534703e6/what_is_the_meaning_of_jeet_kune_do.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49670de9-0f85-40f9-9a74-85db43a83cf4/how_to_program_rca_remote_to_rca_dvd_player.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_off00012d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D5D 5744 bytes
SHA-256: 6847ef65fa10749abc5450eff8ebcf19979b74054494fa7163a029f8a936b3fb
font_01_sfnt_off000140f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140F0 10932 bytes
SHA-256: 8120306ac1c4d4cfe26469305638bbfb44bd6620cf07d79f11f27866c5e8e9ad