Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ded2e80528f3a9a…

MALICIOUS

PDF

85.5 KB Created: 2021-03-23 18:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a063a4a50f6f9df411b26eca3d6d2c7d SHA-1: 1ae9ecbea2127cdb7a4477946c21229d02522f3d SHA-256: 9ded2e80528f3a9a4b6e24a4c6a916128e57570902618ed55705a8fb36d5627f
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 0.9955

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://xezojetit.ru/wix?keyword=dragon+tales+you+tube PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421365/normal_5fdba5c020386.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415937/normal_600cce6398c0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408879/normal_5ff01a97621d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384639/normal_6047530273550.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387932/normal_60117caf5f7fe.pdfIn PDF document text
    • http://frankiearvelo.com/gerund_exercises_eslgpl7y.pdfIn PDF document text
    • http://spoonnumberone.xyz/tamilrockers_tamil_new_hd_movie_20183kkcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446390/normal_60226df6b3dd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415326/normal_5fe8440f4d9ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500878/normal_5fe9687d97062.pdfIn PDF document text
    • http://nikaold.site/what_is_an_sbr_ar_156ikqk.pdfIn PDF document text
    • http://groby-ritual.online/cuales_son_los_trabajos_mejores_pagados_en_estados_unidos1vhs0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384480/normal_5fcf045269fb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475874/normal_5fc6bc5e2bc34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8f1c0ae7-1ba6-4c51-a623-4d29f5e3aebb.filesusr.com/ugd/c1615c_ca513c8192da48ad917e8e4abbccafb2.pdf?index=trueIn PDF document text
    • https://3bdad275-8828-414d-9063-9532e035d791.filesusr.com/ugd/c67d0c_d5ea02522e444da08a0b2698bb1439d3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bulujono/norafuzoxarofosidixijomo.pdfIn PDF document text
    • https://5057b38b-f250-4925-a5fd-2dbc054a2c1f.filesusr.com/ugd/25ee37_7328a1960e6f4e558e8ef16c878e40e9.pdf?index=trueIn PDF document text
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_9ece2904ff894ff98f579e0dbcc01e3f.pdf?index=trueIn PDF document text
    • https://e0271a52-a7af-48e9-8a99-924ce320ec62.filesusr.com/ugd/be5703_8ef85c90cec84c339b5332077189d49e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/traffic_report_on_m11_northbound.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/22671364895.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/82015671570.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/seismic_acquisition_basics.pdfIn PDF document text
    • https://67a4337f-2b79-4d04-9c1d-2578c80f4945.filesusr.com/ugd/964009_5d1aedf48d3f4cef9f18c422ff2fa88f.pdf?index=trueIn PDF document text
    • https://4095172d-bd2f-4181-91d7-dd424e653400.filesusr.com/ugd/df73ab_db0d61706e84464aaa1d6136e3e3469f.pdf?index=trueIn 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_off000103fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FD 3396 bytes
SHA-256: 46e83c0167423b768be69e7107f4ec7c2990a63918df32803fae564d255dfed7
font_01_sfnt_off0001100c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1100C 5092 bytes
SHA-256: d5c6c6c94d99519c3d190b894d37ed0b5b7e902e0c1eeba22e307648fb1d7920
font_02_sfnt_off00012179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12179 11860 bytes
SHA-256: 5009d7ba0e77eab13226904c0c29b52defc11f0c006f802d48cdc6543487366c