Malicious PDF — malware analysis report

Static analysis result for SHA-256 122995a1ef9215cf…

MALICIOUS

PDF

61.3 KB Created: 2021-05-31 23:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 501494143f36e2a403e3e1d142acc43f SHA-1: b1a5e6942dab819f02d73305d586e54f33323692 SHA-256: 122995a1ef9215cfd67ce28c9c097fe3493522853e540563b70e76f107c721ff
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting it functions as a link farm. The document body, though heavily obfuscated, contains references to streaming content, which is likely a lure to direct users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9866

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
  • 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
  • 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://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4ead7587c---43305896504.pdf
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/21ms52on84gsmn0rlimoiel3bm/zuxasemisojakuk.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab58c336826---kefunozazo.pdf
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/b64bec64c2ea07437c8c2e2944304864/raparovelu.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b299d427f38---46023997925.pdf
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/d8d9plf10o2v3cct9u1c8c7kj6/74840866101.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911ccc921b7---lirepirowizugira.pdf
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/b4ae0967938eda47130a12f89d591da6/kegatadu.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073cffe82f53---ruxavu.pdf
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6f3726395---revutowotilawojasike.pdf
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/689ds193brancu347rnpr6ljr0/67227875300.pdf
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/7cc8d7721311dbeee14f3c432f6f71fe/78933141256.pdf
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/qljn6qn8v3du4bnkeq83rjq756/92248055858.pdf
    • http://dynamic1984.com/user_file/file/vinarovoweredugo.pdf
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3d51c9a69---baregafixip.pdf
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160843e7a06aec---47158924360.pdf
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae860bfddc---seromibanutolesafuwi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=ver+cinecanal+en+vivo+online+gratis+por+internet
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8f8.bin
7eb1310165004de82c03457114861c55ea40a82057aacef6270fc2aacbfc794c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F8 5128 bytes

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