Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c008cec3015ca2e…

MALICIOUS

PDF

74.4 KB Created: 2021-06-26 21:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6ba6638d28a93906ddea128ffddea5c2 SHA-1: b1363a3eef662b6e01fcf43506e145c6021a4592 SHA-256: 2c008cec3015ca2e93f4abf9148e867cc5c5b7184c3b8f29ba46edd0399d1189
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. ClamAV detection and ML classification strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/aa29ef4c4a0af735e760f565f94deec8/raxarug.pdf
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd32bc8990---60782923580.pdf
    • http://93564497.com/userfiles/75635073035.pdf
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16077acbfd6fa6---naposusujefofij.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1608cbcee37f7f---xexebamupamurojori.pdf
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa90974558a---61650176886.pdf
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/08kqg7lua8ge017iubi865qc19/sonodobapagomumubose.pdf
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/0d293db83db08374a54a7f11594cecfa/rekutepevob.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16091d05e89579---jubefusut.pdf
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/812f3ef8db6379cec8fd8e8429b4ccbd/62762351938.pdf
    • https://szabobuszberles.hu/files/files/xesudixamizirozibi.pdf
    • http://blissworldbeauty.com/newerac2c/userfiles/file/60805830680.pdf
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160733332c2b51---nesuvujaxalesiwoge.pdf
    • http://seoulsquare.com/userfiles/file/28437876866.pdf
    • http://akkoryazilim.com/userfiles/file/dorusimosewuwokomiz.pdf
    • http://erex.hu/upload/file/5436677071.pdf
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/753e55415d91b80645021ab8564b0382/xasiwiduvuxolumulitemiva.pdf
    • http://overtonnation.com/clients/f/f9/f97855507a39dfa58978186db9bff07a/File/87346401806.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/405348184632a7b2ae8a173c84d4e3e2/gonam.pdf
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/16093ca120f21a---87967986563.pdf
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/3fb2c4cbf519b6dd1ef3eb6a2a6177af/kerixosobijuran.pdf
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4bf7ee76c---xikik.pdf
    • https://auto826.com/uploads/files/kotorujazeser.pdf
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160756f151e172---renemo.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=jquery+on+change+select
    • 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_off0000bcc4.bin
7f18d34ca426859e7fa502e269e759bb06dc7c42c7e042ef2b5fb332647634fc
pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC4 21248 bytes
font_01_sfnt_off0000ec81.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC81 16792 bytes
font_02_sfnt_off00010498.bin
1729937b792101a13e99958467970776f1bc7a5f3d64c7557deab4dcf9f3af0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10498 10768 bytes