Malicious PDF — malware analysis report

Static analysis result for SHA-256 6229fd902bb37f85…

MALICIOUS

PDF

69.9 KB Created: 2021-09-20 01:30:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 9e2a72e956eecf80793037e0d20b3ac7 SHA-1: 26364c336a344681001a9ba693722aff8f98273e SHA-256: 6229fd902bb37f85b7f316e4d7464acaa06fb27328c59fddab9ba9ffada4db9a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with one heuristic specifically identifying it as a link farm on disposable hosting. While no scripts were extracted, the presence of many external links suggests the document's primary purpose is to redirect users to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://happyjourney.webtrails.in/ckfinder/userfiles/files/gutakoxevav.pdf In PDF document text
    • http://geojeoceanhotel.com/userfiles/file/20210910135448.pdfIn PDF document text
    • http://senvietsystem.com/ckeditor/upload/files/mebijasaf.pdfIn PDF document text
    • http://giovanninociti.com/userfiles/files/13942498245.pdfIn PDF document text
    • https://smilaxlabs.com/userfiles/files/pifitevujurerisiwag.pdfIn PDF document text
    • https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/zorolakejazodinumibig.pdfIn PDF document text
    • http://www.louisefarmersmith.com/admin/ckeditor/ckfinder/userfiles/files/lepejumuligo.pdfIn PDF document text
    • https://xn--psg-9lac.hu/files/files/rugapikixiwomig.pdfIn PDF document text
    • https://okud-istra.hr/userfiles/file/74952109198.pdfIn PDF document text
    • http://pluimveebeurs.com/userfiles/file/jejusibam.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed613cd3d9---91286553995.pdfIn PDF document text
    • https://siliconautomation.com/userfiles/file/86311113066.pdfIn PDF document text
    • https://mtmnetwork.net/uploadEditor/files/1281253193.pdfIn PDF document text
    • https://movingalpsfoundation.ch/userfiles/file/runusirirudutiresetazeku.pdfIn PDF document text
    • https://dellrein.ru/content/file/difulot.pdfIn PDF document text
    • http://dulwichtaxi.com/survey/userfiles/files/sitazi.pdfIn PDF document text
    • http://lamelove-zakryti.cz/userfiles/file/97826228131.pdfIn PDF document text
    • https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/kevugani.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/zijomexow.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b3e93c1cfb---734466530.pdfIn PDF document text
    • http://www.ondebiz.com/userfiles/file/wunuvotutizarexuxexujimat.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/91853075958.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=the+bible+unpacked+pdfPDF link annotation
    • 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_off0000b26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB26C 15812 bytes
SHA-256: ae14a08a745268dda97468cd069c0eb8f3f94c7ae66a0807061915d9173f86b7
font_01_sfnt_off0000daab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f2c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C2 10528 bytes
SHA-256: e6c615c06b5481b69495c3b846fc1b36d00ffcb141b774f40564ce20cb2d3e8a

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