Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d5f66153e63007…

MALICIOUS

PDF

75.6 KB Created: 2021-02-23 20:01:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 93a93c4b2c882ff39981585acfbed5a7 SHA-1: bc6cd0a1f806538590c7393d7b4a0d0c836a109f SHA-256: 24d5f66153e6300770009fa6cae58d6aaf34f0d560e71fec5543dcdb8ccd31e1
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 threat. It contains numerous external URLs, with one specifically identified as a link farm on disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of embedded JavaScript, though not fully analyzed, further supports the malicious intent of the document.

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://maypoin.ru/123?utm_term=waters+of+babylon+meaning PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479439/normal_5fd702a01f4c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445864/normal_5fdacecf3c3f1.pdfIn PDF document text
    • http://instapriz365.site/5953853774uk5od.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450890/normal_5ff3f55c7c42a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465907/normal_602165d45fd4e.pdfIn PDF document text
    • http://gamedv.design/jebevz0hzh.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/fjahdhe/jewuwa.pdfIn PDF document text
    • https://cdn.sqhk.co/dedejosewor/2diiAib/business_tour_private_table_free.pdfIn PDF document text
    • https://cdn.sqhk.co/gobopovupav/heqjgye/real_football_manager_2015_java_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/igiwhi7/nasty_gal_returns_policy_ireland.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408584/normal_6010d4508508c.pdfIn PDF document text
    • https://cdn.sqhk.co/lijuwezasip/rhe1rzQ/tupuzatawijajit.pdfIn PDF document text
    • http://xoxinusenavi.66ghz.com/dog_barking_remix_ringtone.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/1509997940056kg3.pdfIn PDF document text
    • https://cdn.sqhk.co/fidasawon/TgjdWjf/14951455389.pdfIn PDF document text
    • https://cdn.sqhk.co/mizogujuzo/Xjcgehg/7532608808.pdfIn PDF document text
    • http://websporizlehd.com/rephrasing_exercises_c1_cambridger7ome.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/seriposuj/zufowazinoborag.pdfIn PDF document text
    • http://kisidop.rf.gd/jatipifoxoginadubuvazobup.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/48500383724.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/84136628241.pdfIn PDF document text
    • http://jegovogetaferop.epizy.com/mevozutaside.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_off0000e8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D8 5340 bytes
SHA-256: 62512d413bd0430def14459af15a2ff40fd5fc37b826fd78f326de08d88fc802
font_01_sfnt_off0000fb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0A 11092 bytes
SHA-256: bd694ba9cc70c6f0dea56dac6816cc951a5ca13c14039e131046ae90716a0044

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