Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b68660ac234597…

MALICIOUS

PDF

76.8 KB Created: 2021-03-10 02:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 9a0fb28e097f1f450c399f1c3ecdb217 SHA-1: f6b7ff1e454f5ea1fcfb5276c4f5059eda1b3827 SHA-256: 08b68660ac2345978b5cdd7c9c83bbab865adde6e0bbaa0c726b006f9c831d56
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to a lease agreement, aligning with common phishing tactics.

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://ponafet.ru/wix?keyword=california+association+of+realtors+residential+lease+agreement+2018 PDF link annotation
    • https://cdn.sqhk.co/fofubulami/ewkgcOC/28790031460.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/c2Kjajf/69600687220.pdfIn PDF document text
    • http://remont-kholodilnikov.website/android_phone_hard_reset_codewjktm.pdfIn PDF document text
    • http://5-euro.info/samsung_nx300_camera_price_in_india1j6vi.pdfIn PDF document text
    • http://good-production16.site/mariruteawpp9.pdfIn PDF document text
    • http://fashion-deals.xyz/tracfone_moto_e6_specss039t.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/seven_deadly_sins_in_the_bible_kjvlt7hq.pdfIn PDF document text
    • https://cdn.sqhk.co/lakodatoli/51jhKjh/battle_city_super_tank_1990_ps4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5c09c65f-4728-49e3-9562-8692e696fc4f.filesusr.com/ugd/32acb1_439399ef659c43b1ba61857348ab70ea.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab189e23-b602-48d8-8100-60f171a09546/cowon_d3_plenue_8gb.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/luwopalananefalemu.pdfIn PDF document text
    • https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_6a1dae5570f942538cb7db16ed536582.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/accuracy_and_precision_lab_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/442fd63e-f67e-4f7e-80aa-40c8e83d5103/pose_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/chama_chama_new_song_pagalworld.pdfIn PDF document text
    • https://a121017b-3fb3-450c-9156-48dd71a9bf80.filesusr.com/ugd/07625c_d033b24c2f314890b825f4aac1d7c9c7.pdf?index=trueIn PDF document text
    • https://ede36962-9452-4451-b182-fa4236ba9bc6.filesusr.com/ugd/83b1b3_94fc40fbbbfd4343b2c7659a2dd14ceb.pdf?index=trueIn PDF document text
    • https://5b5cf7c4-d983-4e27-bd54-44d52fc9074e.filesusr.com/ugd/2f9450_97671e717f04470c996f64bf9a5c70ba.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ximupuv/63137888436.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_off0000ee0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0F 5768 bytes
SHA-256: b9df71c5f1f0a4f9ff7e82557252dc119544ae697feae7da8bc87615ef7780c7
font_01_sfnt_off0001019f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019F 10448 bytes
SHA-256: 9543f4b114d2ad3a50788a78adf427dbba95e72e6e4beb5596b704ccd3669180

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