Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2ebe8032927dfe…

MALICIOUS

PDF

70.3 KB Created: 2021-09-18 21:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 29c742355a0da4042c966df712072011 SHA-1: d90c8d475cd222e18fd0b13ad3cb78fa2ef5defa SHA-256: 1e2ebe8032927dfe204b5d50607443d848dfee174d45ddec64324200cca71378
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous embedded URLs pointing to external sites, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by identifying a large number of links on disposable hosting, likely to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://pixomot.ru/uplcv?utm_term=crash+bandicoot+3+iso PDF link annotation
    • http://pujcovnanaradi-tvarozna.cz/userfiles/files/veperuvagasi.pdfIn PDF document text
    • http://consade.com/userfiles/file/nidanugoruwesipumofeno.pdfIn PDF document text
    • http://preciz.com/uploads/wysiwyg/files/48598026158.pdfIn PDF document text
    • https://a-metal.e-giant.net/archive/file/files/wodufurasogipaguxokuf.pdfIn PDF document text
    • http://fasson.vip/images/editor/files/8136593339.pdfIn PDF document text
    • https://open-call.fr/uploaded/files/65956474195.pdfIn PDF document text
    • https://amatnieks.lv/pictures/image/fenakomigetaxajinejip.pdfIn PDF document text
    • http://vanhacollection.com/images/files/14762109466.pdfIn PDF document text
    • https://bahispesinde.com/gnc/veri/_files/vomologupemefezaz.pdfIn PDF document text
    • http://chamdure.com/DATA/files/sulavafiwovagu.pdfIn PDF document text
    • https://highlander-inn.com/assets/userfiles/files/51298950617.pdfIn PDF document text
    • https://nenmongdangquang.com/upload/files/tukukekezonoremimedune.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/jesevebuvapa.pdfIn PDF document text
    • http://jiachuankeji.com/upload_fck/file/2021-9-19/20210919013833951986.pdfIn PDF document text
    • http://3gr-group-com.gbintl.com/ci/userfiles/files/52731197925.pdfIn PDF document text
    • http://hfnhsw.com/upload/files/juzejegimugu.pdfIn PDF document text
    • https://wtmasonry.com/ckfinder/userfiles/files/soriwepazewedunibex.pdfIn PDF document text
    • http://larben.cz/media/images/upload/file/50923706347.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614022bf1b90b---vulibebi.pdfIn PDF document text
    • http://stapper.de/sites/default/files/userfilesfile/dejexoviboniroxu.pdfIn PDF document text
    • http://osmed.cz/app/webroot/files/files/pifijodo.pdfIn PDF document text
    • http://ajej.pretty-match.com/upload/files/jivudimagexikimakupo.pdfIn PDF document text
    • https://kingbakerypans.com/userfiles/file/jisebuxegajuvotowemota.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_off0000b107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB107 16692 bytes
SHA-256: 2541abe7c3952df62e77b193d997da6b2fa5680998dd383669d213cf8f6bceef
font_01_sfnt_off0000dbaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C1 10632 bytes
SHA-256: c3c63c2e3ba1fc3097db0b9901e85c068e0e2e2c66b927bfb02ec8021b03885d

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