Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae3740ef8d3ad9c…

MALICIOUS

PDF

75.1 KB Created: 2021-04-06 05:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f6e10fe484936d4f0cb6e73421eb6771 SHA-1: c82625567370e2fd59a7fd6038d1a9ed4d6af78b SHA-256: 2ae3740ef8d3ad9c2e2cb92e1852a5d2829f47b6f78630cee2cf27e9eb9ee50a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/wix?keyword=lucia+jordan+books+pdf PDF link annotation
    • http://supernefritroller.xyz/best_dryer_sheets_to_keep_mice_away0txhf.pdfIn PDF document text
    • http://supportcopyright.net/dosebewaxabenifazazojoguldkfha.pdfIn PDF document text
    • http://stickerrus.ru/brandon_sanderson_mistborn_series_in_ordervlnhm.pdfIn PDF document text
    • https://mogopefisumiba.weebly.com/uploads/1/3/5/2/135295831/ea04a0eb.pdfIn PDF document text
    • http://zanefuw.iblogger.org/is_sharp_microwave_good.pdfIn PDF document text
    • http://magazok.top/is_the_game_of_thrones_book_finished6ct7f.pdfIn PDF document text
    • http://helper-badges.com/does_heating_oil_smell_go_awayx46t9.pdfIn PDF document text
    • http://btsworld.org/magna_carta_effects_today60vmg.pdfIn PDF document text
    • https://jizimixu.weebly.com/uploads/1/3/4/0/134095846/79cbb8be3aa182.pdfIn PDF document text
    • https://fifejinokufo.weebly.com/uploads/1/3/4/8/134846395/1181240.pdfIn PDF document text
    • http://lakujalinifibo.mypressonline.com/frases_hechas_en_ingles_para_redacciones.pdfIn PDF document text
    • http://m-laskin.ru/74562210004xxm4x.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://711a90e7-97f2-4eab-8690-3003ec1e9b64.filesusr.com/ugd/a0905b_e5d18995892a40eabea6948e068a21e2.pdf?index=trueIn PDF document text
    • http://jutividaw.rf.gd/busulirawitesupomegomoba.pdfIn PDF document text
    • http://sodowurivav.onlinewebshop.net/how_to_get_approved_for_business_line_of_credit.pdfIn PDF document text
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_fe2afdc706f94e7cb2adb4b8e9d1c212.pdf?index=trueIn PDF document text
    • http://vofovesotidogi.epizy.com/68465106943.pdfIn PDF document text
    • http://nogigekeweragu.rf.gd/binibabedeti.pdfIn PDF document text
    • https://3bdad275-8828-414d-9063-9532e035d791.filesusr.com/ugd/c67d0c_658a270c940a45ec9f7e7d024d56420b.pdf?index=trueIn PDF document text
    • http://menepanago.rf.gd/36869007923.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_off0000d978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD978 5020 bytes
SHA-256: 0fe3c2eef5727d011a81a7170c94d6cabba0336add38fe0cd9e3924e62b5b1b8
font_01_sfnt_off0000ea85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA85 10920 bytes
SHA-256: 058ed252bea16100622716d004ce3c9b41fcdec02803aef73868ec57b4ae2115
font_02_sfnt_off00010ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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