Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d2605691115c90…

MALICIOUS

PDF

79.7 KB Created: 2021-09-23 04:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2d379af770fc44985f746214798f6415 SHA-1: b6e8515f61c6a1b60778cd63c7ede78f498f3d2c SHA-256: 02d2605691115c90c1d735d5e1100ce76041672f02be1785c23feb922a623da7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites. Several heuristics indicate the presence of link farms pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to obscure the true destination or host malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://aordonez.com/images/contenidos/files/49512411841.pdf
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/n9o06edocibfokvqrc8dmqmi3l/7984163243.pdf
    • http://ddaengshop.com/ckupload/files/pilibefolerexipatikix.pdf
    • http://hanlacsclub.com/ckupload/files/7580994438.pdf
    • http://showpalmedical.com/userfiles/vuwajifivipujodasaki.pdf
    • http://location-appartement-venise.com/italie_documents/files/giwetutogubosutujowiku.pdf
    • http://provia-events.de/pics/fotos/1/file/nedunizokob.pdf
    • http://carrozzeriardue.it/userfiles/files/60175237310.pdf
    • http://maasmartcity.com/userfiles/file/finosarolikafojajegef.pdf
    • http://rollfactorytogo.com/uploads/files/74551917944.pdf
    • https://www.mediawerf.nl/bundles/store24backoffice/ckfinder/userfiles/files/mesezotexefojufa.pdf
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/731681bbffb441b5dac3d72a2345a630/jikumoro.pdf
    • http://worldplastsolution.com/ckfinder/userfiles/files/64884197792.pdf
    • https://www.abrasco.org.br/ckfinder/userfiles/files/rixedikolikonos.pdf
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613744ed8681c---sawokiromonodovagufo.pdf
    • http://frickcontrols.com/uploads/files/21061262359.pdf
    • http://old.arcnet.org.tw/ckfinder/userfiles/files/66901463672.pdf
    • http://misr-consult.com/userfiles/file/wesasekezej.pdf
    • http://studioboscono.it/userfiles/files/63700295865.pdf
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/gfm9tg5mh4gun0ps8dr0dlr4k0/buwotur.pdf
    • http://erfaspot.com/resimler/files/30220108661.pdf
    • http://grupopiscis.com/upload/files/zorozubijogiviwasuniwub.pdf
    • http://lexus-custom.com/js/upload/files/tixunosu.pdf
    • http://muszempilla.com/files/file/69278604195.pdf
    • http://nscenter.cn/upload/files/92970675033.pdf
    • http://teakdeck.pl/files/file/35343636121.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=ppsspp+burnout+3+takedown
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d510.bin
a7cd81d004522719a27180103fe8611d772c92fc5424fdf904e284a3985beb9a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD510 10836 bytes
font_01_sfnt_off0000ee1e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1E 16792 bytes
font_02_sfnt_off00010630.bin
c01c6bc76d7af3dfc3af1a894a672b230860ae119570535414fbdd6feaffbd41
pdf-font-stream PDF embedded font (sfnt) at offset 0x10630 16688 bytes