Malicious PDF — malware analysis report

Static analysis result for SHA-256 d075f462cf98c3fe…

MALICIOUS

PDF

70.2 KB Created: 2021-09-05 17:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 887a58330eb4ca8a8eaa89b292f5e53e SHA-1: 60007c23daac01512202ec4304e210a86dc1a5c3 SHA-256: d075f462cf98c3fe66f5740c9ef6dd7978868bf4b991890eea07a030d81f9103
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm directing to numerous URLs, many of which are hosted on compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6872

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://imi.vc/upload/files/74643079950.pdf In PDF document text
    • https://ambient-interier.cz/files/files/50799316255.pdfIn PDF document text
    • https://tagoproperties.com/ckfinder/userfiles/files/gezax.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/hfcolm27rh9o1iuthee5j4n80d/siwijam.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/krtneh9hod290ps9e0mtm5vnsi/finorivipagoso.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607834c017ede---12095493611.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/kuvuwiroza.pdfIn PDF document text
    • https://jager-ig.tw/up_photo/file/39147291660.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/9c7gu2cqn2nh172qkrsps5ohs4/jobopekesebanutavameleg.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf23a672d5---tukunelajojobiredi.pdfIn PDF document text
    • https://sjalikave.hu/pictures/file/55810437887.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/2vibhc4v74tno89rfmnevfbhh0/23215523180.pdfIn PDF document text
    • http://heatkings.net/fckpic/file/35284669415.pdfIn PDF document text
    • http://schubert-hh.de/image/file/69339212144.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/bosor.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/0aec288e4cb1f4c4c55105c4f9635f2e.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/578560927018f395d05f65cf5dcf37f0/zofovepudesa.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160eca5630df57---lavedokomo.pdfIn PDF document text
    • https://prevodi-plovdiv.com/userfiles/file/60569965348.pdfIn PDF document text
    • https://5uempat.com/contents//files/lofivo.pdfIn PDF document text
    • http://cambresisemploi.fr/ckfinder/userfiles/files/revifag.pdfIn PDF document text
    • http://evolutionchonburi.com/userfiles/files/ziredijilatu.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092baa216166---7113125926.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/7b5ce4ac79a289c85cbd57875f9253cf/julonum.pdfIn PDF document text
    • https://dodomacnosti.net/data/file/zizonojogekonisajozome.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=final+consonant+blends+worksheets+for+grade+2PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d48d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48D 17256 bytes
SHA-256: 7b96e3ba58387f1c5e7804a0c5bc09f0a9bda61f8ceb9112fe529479184e9d1a
font_01_sfnt_off0001005f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1