Malicious PDF — malware analysis report

Static analysis result for SHA-256 f710162af37f7526…

MALICIOUS

PDF

80.4 KB Created: 2021-09-18 14:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c9d67d2189ea26b260843f6ce2de80c4 SHA-1: d455cc624a0a08240a1533873266cab8bfe7d96d SHA-256: f710162af37f752672b4b3385dcd0291a3c57f75088d839c7b095cc08f5a2c27
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs, with one prominent URL leading to a site offering a game hack download, suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing campaigns that often leverage embedded JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://smidgel.ru/uplcv?utm_term=vegas+crime+simulator+2+mod+apk+hack+download+2018 PDF link annotation
    • http://bhhangkhong.com/upload/images/files/pajorojixovinunatetitiso.pdfIn PDF document text
    • http://drumlockingclamp.com/FCK_Editor_Images/files/18360880922.pdfIn PDF document text
    • https://glamweddingdesign.com/userfiles/file/nabetanevozufavufi.pdfIn PDF document text
    • http://sindikat777.ru/ckeditor/ckfinder/core/connector/php/uploads/files/92962520593.pdfIn PDF document text
    • http://cheumst.com/upload/fckeditor/file/45279288508.pdfIn PDF document text
    • http://kwiatmetal.pl/userfiles/file/dusukenivanazagejozevik.pdfIn PDF document text
    • http://ahzgbh.news-read.com/upload/files/83216843110.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/20735007304.pdfIn PDF document text
    • http://snabsz.ru/ckfinder/userfiles/files/fekodezolezusuvuli.pdfIn PDF document text
    • https://s-oil.hoakhanh.vn/uploads/image/files/wenatotelomad.pdfIn PDF document text
    • http://hosungtour.net/FileData/ckfinder/files/20210917_F2AC1E65570A19B4.pdfIn PDF document text
    • https://theloneranger.tv/clients/loneranger/ckfinder/userfiles/files/85135568572.pdfIn PDF document text
    • http://americansemitruckparts.com/d/files/7181210822.pdfIn PDF document text
    • https://safrano.pl/userfiles/file/40472487383.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/60940328906.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16145680ae70a2---81194350532.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/60041540007.pdfIn PDF document text
    • https://paulogomeslda.com/userfiles/file/nudaxopajajefabeleri.pdfIn PDF document text
    • https://bdata.vn/upload/files/bilotofenoxusujexal.pdfIn PDF document text
    • http://cke.hk/userfiles/dijovimarajezito.pdfIn PDF document text
    • http://hflchw.com/upload/file/52651663973.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/jimufuvez.pdfIn PDF document text
    • http://shesob.com/file/files/89812460006.pdfIn PDF document text
    • http://gift-founder.com/archive/upload/files/salipawapewoxagel.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C7 11708 bytes
SHA-256: acec1617f32f840105aa6852a19a9dfaf99e21992f9ddd9db708b7cb10c168bc
font_02_sfnt_off0001026e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1026E 18940 bytes
SHA-256: 934272c9bb7a3e38327705d9d651bec85fed842f7c1932411b177ca09fb26889

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