Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccea609ea047c72d…

MALICIOUS

PDF

75.0 KB Created: 2021-02-20 23:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 39a9cfc93e10a49d9faa2e41b134b6fb SHA-1: a26ed628bc90e42e44d982df428ce56b15d60024 SHA-256: ccea609ea047c72d3d5721057d2d250fe217aa732ac44a02bf75a6a78d82b0b5
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malicious redirection scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on potentially untrusted hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/wix?keyword=song+of+the+open+road+meaning+in+hindi PDF link annotation
    • https://cdn.sqhk.co/mujawiru/aVjhgcw/bet_plus_app_not_working_on_firestick.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474979/normal_5fe808172ea41.pdfIn PDF document text
    • https://vituxusupodewe.weebly.com/uploads/1/3/1/3/131379836/pelipakomataxifew.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/pvlidTZ/2914548286.pdfIn PDF document text
    • https://davabodijesofid.weebly.com/uploads/1/3/4/4/134474123/2692005.pdfIn PDF document text
    • https://naruvemekojesez.weebly.com/uploads/1/3/4/6/134685524/e74e9095041149c.pdfIn PDF document text
    • http://makamar.tech/watch_romance_movie_onlineeaqr8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452377/normal_6025178567d5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485010/normal_5fd7aeebc25bf.pdfIn PDF document text
    • https://cdn.sqhk.co/febutatesu/UIqhhfI/75519578211.pdfIn PDF document text
    • https://nujodobenume.weebly.com/uploads/1/3/4/4/134441993/7b42c64.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/V1igGhy/dreamers_and_lovers_venice_beach.pdfIn PDF document text
    • http://hisgohar.site/witcher_3_blood_and_wine_console_commands74177.pdfIn PDF document text
    • http://bofitek.iblogger.org/revodif.pdfIn PDF document text
    • https://cdn.sqhk.co/fetuxudo/idSAWjg/piduwepirunawemikaxatov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zukurofumajigew.epizy.com/gaviromukerele.pdfIn PDF document text
    • http://dusexere.epizy.com/how_to_read_guitar_chord_diagrams.pdfIn PDF document text
    • http://kevusej.epizy.com/6751960206.pdfIn PDF document text
    • http://xivajaraseb.rf.gd/what_does_a_quick_study_mean.pdfIn PDF document text
    • http://pitetuli.epizy.com/vexejarubekepupip.pdfIn PDF document text
    • http://nolonogatifotop.epizy.com/series_e_filmes_online_apk.pdfIn PDF document text
    • http://zoloxufiz.epizy.com/bibla_shqip_apk.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_off0000e7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C1 5348 bytes
SHA-256: 0c3f3625fde353bf0d16cb775db49be7cda48dec2516b5ca216f194ff656653a
font_01_sfnt_off0000f9d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D2 10812 bytes
SHA-256: a31eccc73dafa7f43e950bb2743175b7d7f0a0ff77628620e6ca6006f6f2fbd0

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