Malicious PDF — malware analysis report

Static analysis result for SHA-256 06214cd02138476e…

MALICIOUS

PDF

85.7 KB Created: 2021-06-29 10:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d137736a5f982807272e29dadca74a90 SHA-1: cf3d7298f65e245b82808c9d92fe67264d4e318a SHA-256: 06214cd02138476ede6cdf3cec84294f0eb6009431fa95e443fc2232d5e815f0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting an attempt to redirect users to malicious sites. The document body was unreadable, but the presence of numerous unknown URLs strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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.
  • 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://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16096f014746fd---jomofejisuxinusilogix.pdf
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/88c2ef356468cf11d28549847bb4f60a/27876761314.pdf
    • https://iword.de/userfiles/file/guburir.pdf
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/7a4fc8cf180a43a042327479b7a27d0d/34443333915.pdf
    • http://aiswaryamatrimonials.com/fck_uploads/file/23457965415.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/1baf908fdcac6cec2eae2be75408115c/43151590554.pdf
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c16747e5de1---32589892495.pdf
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbd44c810b---74579703974.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/u5nii9320ke272pplvfgc8f2at/97632870117.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/87dc689c1be60ce809ad2afd9b7325fa/rowujiruk.pdf
    • http://hart-metale.pl/gimnazjum/userfiles/file/21975784922.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160862a2cf2f30---49474542799.pdf
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/e0f87c1b643fc9fac1adfeaae83ce707/bigewag.pdf
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/50960430916d86265a47561e08078c3e/84764766474.pdf
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609888834c275---3499203708.pdf
    • http://apcmagon.com/userfiles/9371277741.pdf
    • http://sbhs1967.com/clients/8/89/8985ce50e7417da620f75e2af787291b/File/25752286311.pdf
    • http://zulaikhatextile.com/userfiles/files/xobinunimubivininedefome.pdf
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/5ojis5erijifhs7p3o93r8tl35/sinezifibiw.pdf
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/h48sgfgjuk6bi0b2hg0rht5vp6/57489862412.pdf
    • http://ashioke.com/images/library/File/18048916373.pdf
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9409a6ea1---80112929411.pdf
    • http://animalscipublisher.com/files/upfiles/file/mezivuzivopezadeturarini.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=the+dead+and+the+gone+series
    • 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_off0000ee8a.bin
11bb68b3c2b6f3d3f03c946f5e0b8b326b08e8145a87541d62d86d8ab1d87d4d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8A 17152 bytes
font_01_sfnt_off00011b2f.bin
f235ab48aadf3c555390ac7ccac8d64aaedd0719b2b62302dc0eec28a1dcaac1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2F 10444 bytes
font_02_sfnt_off000132a0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x132A0 16792 bytes