Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e0a0a6ea89386f4…

MALICIOUS

PDF

103.5 KB Created: 2021-02-13 22:54:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3047ac2f766d7294df8cf253767a8de3 SHA-1: 50087afddd4db71c7adc1cfbf0d313b19df2d23b SHA-256: 8e0a0a6ea89386f46c75bd3c607d61cea52b57a25d60be6a27f3f1a0f67b39aa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords related to a game build, likely serving as a lure.

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://crophysi.ru/123?utm_term=jedi+shadow+infiltration+pve+build PDF link annotation
    • https://cdn.sqhk.co/tesadubozino/FidfFhb/zig_zag_lines_clip_art.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/fyQidge/aarp_games_mahjongg_candy.pdfIn PDF document text
    • http://jijagigipijum.iblogger.org/gojaxunu.pdfIn PDF document text
    • http://lunowizu.iblogger.org/dexijoxamirasil.pdfIn PDF document text
    • https://cdn.sqhk.co/genamudazunu/G8iejcb/prayers_to_thank_god_for_his_blessings.pdfIn PDF document text
    • http://welutotadaxol.iblogger.org/tepizaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474978/normal_6007ef91236ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450426/normal_5feb7bd8ef995.pdfIn PDF document text
    • https://cdn.sqhk.co/totafeta/hfWjg3F/faze_orba_trickshotting_map_code.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470841/normal_5fe3f60deefca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415534/normal_5fcfacb9e8c37.pdfIn PDF document text
    • http://damapilob.iblogger.org/unnikrishnan_annamalai_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/L7Hhbhi/register_my_walmart_moneycard.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422628/normal_6005ea86918e2.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/PiggdFl/vibrant_democracy_meaning_in_english.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/aparatos_del_cuerpo_humano.pdfIn PDF document text
    • http://dimafox.epizy.com/android_custom_action_bar_menu_item.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/viladovupajabevimu.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/55915397254.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_off00014e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E85 5408 bytes
SHA-256: 766ea966b73b444160b38a055f86bea5d9f82fd0f57ab2ad728d13c399bc9ab3
font_01_sfnt_off000160ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160EE 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0001697c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1697C 11116 bytes
SHA-256: cbe6ed2a7706ef05306f567d6703fc75a40994dbfd0028d5a21139b743578eea

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