Malicious PDF — malware analysis report

Static analysis result for SHA-256 14bceecef6251e67…

MALICIOUS

PDF

78.7 KB Created: 2021-03-17 23:29:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 29ff99f1299926f18294484f36e64ac3 SHA-1: c410b4dbba3e97f03cb71b2d5653427c71738fcf SHA-256: 14bceecef6251e67f03bb46af18f03dfd20cab2e7bbc5f17b4749c89d787e95a
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary lure pointing to 'jacksth.ru' disguised as a game search result. The PDF structure and embedded links suggest it's designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/wix?keyword=thin+ice+club+penguin+game PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482629/normal_5fefc2e1bc4fb.pdfIn PDF document text
    • http://effektzhizni.ru/710194692057mn65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418587/normal_5ff20f6b80873.pdfIn PDF document text
    • http://pixerofojoka.22web.org/pevofamepiloreme.pdfIn PDF document text
    • http://tanifulumu.iblogger.org/lusazikulasan.pdfIn PDF document text
    • http://itsamorem.com/9437096120ekxvf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470681/normal_5fffe9fcc41f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443329/normal_5fe743c4f38ff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/5ff79726-e2de-4f01-bcf1-1fdb33a184e2/88969598011.pdfIn PDF document text
    • http://toxiwudogosos.epizy.com/retitibu.pdfIn PDF document text
    • http://nifopufu.epizy.com/wixemozipilowuni.pdfIn PDF document text
    • http://xujiwusa.epizy.com/tewodewojefewujave.pdfIn PDF document text
    • http://xedovafimolodem.epizy.com/inequalities_in_one_triangle_worksheet_answer_key.pdfIn PDF document text
    • http://dapewujekim.epizy.com/87531815946.pdfIn PDF document text
    • http://bogasupi.rf.gd/chikki_mukki_song_starmusiq.pdfIn PDF document text
    • http://kesekerezox.epizy.com/levantine_arabic_dictionary.pdfIn PDF document text
    • http://bilexijo.rf.gd/kugaw.pdfIn PDF document text
    • https://4590046d-f0a9-4171-b8a0-56ff8c1fe63c.filesusr.com/ugd/0bfb20_1470ef2d69744319bee9e0f8341ff2dc.pdf?index=trueIn PDF document text
    • https://db244590-af71-4c33-bd6e-2f8f55f31281.filesusr.com/ugd/fdab61_7e9aa2bbfc3c49ee87a2ebafd651879d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/19a49db2-2e37-45d1-a927-f5f455e4953b/figono.pdfIn PDF document text
    • https://7ef7ebf0-bcb0-4ca2-8538-5a19c3e9f01c.filesusr.com/ugd/aff7ca_25149653c5054b5dabdd733151bc99c7.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_off0000e7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 4852 bytes
SHA-256: 7919639203df71a0b9fb19fddf56c4622aea95add85f9786532cd9996e75f558
font_01_sfnt_off0000f7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EA 12012 bytes
SHA-256: 385e41fad70bf09683f809d8b3108eebd8b1625c28ae88fb22df50eaea7d29a9
font_02_sfnt_off00011fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC7 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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