Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd3e0d7111d338a…

MALICIOUS

PDF

78.7 KB Created: 2021-09-06 14:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0b2ec6ad742e3835476e91817c2cf2b1 SHA-1: d2350dceeea85e71b894af825bb844e9652271e9 SHA-256: ddd3e0d7111d338a1f3970e8559374a68c160924deb0a5fa66fa064507186193
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress sites and a raw IP address, indicating a link farm designed to redirect users to malicious content. The document body is unreadable, but the heuristics strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • 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 http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/fu414ik6e8r4rmbo2iosbb0955/74630522721.pdf In PDF document text
    • http://auxerretv.com/content/public/file/nadagijufesixova.pdfIn PDF document text
    • https://md-bud.pl/szklo/photos/file/38119145362.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16075cf96ed670---xojuwip.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/161356bd712502---tagisasawabivaroninatazob.pdfIn PDF document text
    • https://idosekotthonaveresegyhaz.hu/files/files/bopizufajigaburoviketewug.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1610913ef44f26---powodinukoburumagaxivu.pdfIn PDF document text
    • http://140.121.161.111/ckfinder/userfiles/files/jazuvim.pdfPDF link annotation
    • http://www.puhito.hu/uploads/75646651420.pdfIn PDF document text
    • http://abnicum.com/files/file/21766831190.pdfIn PDF document text
    • http://rebizplus.com/userfiles/file/fekemufafe.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16098323b2d2f4---loxiko.pdfIn PDF document text
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/406870019acb93ce527a3b1fb8eef882/33896386837.pdfIn PDF document text
    • http://daltan.hu/userfiles/file/vumasogerad.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d1a0ef4bbec---xamomowonaxojunurowi.pdfIn PDF document text
    • http://builderall.info/userfiles/file/95864022555.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611e001899248---voputibep.pdfIn PDF document text
    • http://xn--80adpfaaeictf0c6c7i.xn--p1ai/public/file/60517046903.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607de0d84033e---tufaromorelalasebujobera.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16092c92870cc1---12599563314.pdfIn PDF document text
    • http://goldartline.ua/userfiles/file/laletukiwomimulosawevaj.pdfIn PDF document text
    • http://yogaschoolofkerala.com/photos/editor/files/kokuzetolidirotugelinoko.pdfIn PDF document text
    • https://tadimtursu.com/image/files/tefaxubopa.pdfIn PDF document text
    • http://icloudcleaners.com/uploads/account/autoresponderfiles/30809144393.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=manual+do+refrigerador+panasonic+inverterPDF 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_off0000cc0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0E 10952 bytes
SHA-256: a4c6911c5fd04d7015a25e211b7b211826ca8abf24c7231d061a4e7d24a8b2cb
font_01_sfnt_off0000e55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55B 18456 bytes
SHA-256: 0c79f86c9d0c1466d8bb20ad69d373146d9a72f3bf6d5d093680e2064ab1517a
font_02_sfnt_off00011525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11525 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1