Malicious PDF — malware analysis report

Static analysis result for SHA-256 e093e0e214af7fbc…

MALICIOUS

PDF

95.5 KB Created: 2021-03-14 02:41:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: a6607fc776aa2b9071f5acf2fa2566ac SHA-1: ebe22bac65ac93e6f4f5cae2b5db2ad0e4434f19 SHA-256: e093e0e214af7fbc006f2ad57a63c04f407d8bfe1ee10916621a454455ffcbfd
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/wix?keyword=rosa+parks+reading+comprehension+worksheets+pdf PDF link annotation
    • https://cdn.sqhk.co/sepolulegaba/i2reggi/gun_strike_real_3d_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385410/normal_603274037a150.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/ejdjcgf/61476214227.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453115/normal_5fe7b23d7f53c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465264/normal_601872267fb5b.pdfIn PDF document text
    • http://kurametugugu.mygamesonline.org/64708607615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379221/normal_603a7cb9adbbe.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/ihFWVja/xbox_series_x_in_stock_alert.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449771/normal_60449674674a6.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://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_c07dfba6573242ef85baf001221eaca2.pdf?index=trueIn PDF document text
    • http://duvodix.myartsonline.com/how_to_reset_the_control_lock_on_a_whirlpool_duet_dryer.pdfIn PDF document text
    • http://vobikeretuwof.atwebpages.com/amc_10_b_2020_cut_off.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/64918979972.pdfIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_cdacca5b78c044d8ae1ff2c505ade7af.pdf?index=trueIn PDF document text
    • https://0a38098d-26c8-4844-ab0b-2dfc398d7f8d.filesusr.com/ugd/fffd55_faf99b307475444a81f99251d88896ab.pdf?index=trueIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_2d50b908d8da4517839e82bc6de11062.pdf?index=trueIn PDF document text
    • https://40fd9d30-e691-4ad4-9ff9-7de67b304886.filesusr.com/ugd/45b27a_3af399790d294dec83f3e8f71bc94b6e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/45270735604.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF70 6744 bytes
SHA-256: ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425
font_01_sfnt_off00011058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11058 5488 bytes
SHA-256: e6d3b6b5ec155f6f8bcd6661ade1ce93394089fc7f8121d9eb4c4d1c44616b98
font_02_sfnt_off000122f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122F3 12640 bytes
SHA-256: a60d72a7268c79c74a7eac3cc9ff9be07600b9f6111b907b2cec880b17ecce35
font_03_sfnt_off00014c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C5F 16144 bytes
SHA-256: f0a8b786da721c7415a59d91fbce3b20bbb98ea32e48857ac1ff22d53b00ec29
font_04_sfnt_off00016163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16163 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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