Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dd5a2bdd99fd2af…

MALICIOUS

PDF

97.0 KB Created: 2021-04-04 08:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8f5540dad8bf4172894939520666a0a8 SHA-1: b3773d46691bd8493affb1ef65c74e44102ee623 SHA-256: 8dd5a2bdd99fd2af41fe88132919e429bb143ed4a3a49bdd30793b2abb961662
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 0.9998

Heuristics 5

  • 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 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://dugedepap.ru/wix?keyword=brother+hl-2040+service+manual+pdf PDF link annotation
    • http://alisabor.design/scooby_doo_on_zombie_island_soundtrack_cd9ooke.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/guja7gf/66428035373.pdfIn PDF document text
    • http://sneakerspapa.store/2010_camaro_ss_6.2_top_speedfnav2.pdfIn PDF document text
    • https://xalojuxovev.weebly.com/uploads/1/3/0/7/130774978/pawewi.pdfIn PDF document text
    • http://galoomer.online/black_bird_manga_espanhol_tumangaonl39ymi.pdfIn PDF document text
    • http://citrus-fruit.space/minority_scholarship_form_2019_jharkhand8d42w.pdfIn PDF document text
    • http://discount50it.pro/what_is_feminist_theory_in_international_relationshslnd.pdfIn PDF document text
    • http://iranomics.com/as_white_as_a_sheet_idiom_meaninguenky.pdfIn PDF document text
    • http://haustova.com/xalategzes6.pdfIn PDF document text
    • https://bixarina.weebly.com/uploads/1/3/1/0/131069915/xaladi.pdfIn PDF document text
    • https://cdn.sqhk.co/dorusafe/28QBXgg/marasefuwu.pdfIn PDF document text
    • http://hookup153.online/54814376738dzfae.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://9849c7ec-8b19-4b81-9a64-db2537ea7c40.filesusr.com/ugd/97b1c0_c64deca8ea8a40038cc723baa82f85e0.pdf?index=trueIn PDF document text
    • http://foridifakusexum.rf.gd/64015043685.pdfIn PDF document text
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_d5bd108ba39c4687959ba0dd23026d43.pdf?index=trueIn PDF document text
    • http://kadegezopofog.rf.gd/dejoleg.pdfIn PDF document text
    • https://7162416e-a815-4e2e-b4b4-2f1b6d3d7a1b.filesusr.com/ugd/0723a7_b0a0da33c7b24ab3936d7a521a77bb8e.pdf?index=trueIn PDF document text
    • http://sejekaxupoze.epizy.com/cyanide_and_happiness_adventure_game_free.pdfIn PDF document text
    • http://nuziwaji.epizy.com/bhagavad_gita_book_in_gujarati_free_download.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_off00012e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E25 5780 bytes
SHA-256: 56c587ef659fd985d7014601c8a0c55f5428abc05613bdf5d31ec7c9265f419a
font_01_sfnt_off000141b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141B3 11424 bytes
SHA-256: b024a19c253a5bc3548e6cee0f7b426c72d151d72d23f210d31bf94d6ca34c04
font_02_sfnt_off0001687c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1687C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.