Malicious PDF — malware analysis report

Static analysis result for SHA-256 3123ab32bdadf5b1…

MALICIOUS

PDF

85.4 KB Created: 2021-06-11 01:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 17c33d123ee8c27d39c59f79e74de221 SHA-1: 594cdb0557ed90c203512cb08891434fd0b6c760 SHA-256: 3123ab32bdadf5b185d9fb88d50a0efe7d37ad6e314ddeffd02d0b237ebc4d46
196 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The 'ClickFix' heuristic indicates social engineering tactics to trick users into executing commands, likely to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://philabc.ru/uplcv?utm_term=download+map+hello+neighbor+minecraft+pe PDF link annotation
    • https://communeouchamps.fr/userfiles/file/17538168595.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160755af89ae7c---9571999389.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/managemulefebel.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160978dc90ba00---dakapetukurojazopewexiler.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608bfd32a7bed---retusejuvus.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a264e8ca986---92249195791.pdfIn PDF document text
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/44d529db197cdfa2a9d85c361ca8869d/bebimunolajuzenoved.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/8fbad5982af3dae247d2d5f1a82d4ec1/94778694020.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/babjk6252cmkqdvljo3m96df4p/luguw.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file/%5C/23405742101.pdfIn PDF document text
    • http://aps-mes.com/files/file/98750532564.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a14d1528b---78675785315.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/53632644452.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/belumu.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/76869279988.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/195f7dd363770415d79fb9ea0ff07bc8/tadatofegilizeran.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • 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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000f323.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF323 12592 bytes
SHA-256: 69c543d9b672cb47891ab826425f18ac4b5ba98551e87c20a9b78f142b4dda09
font_00_sfnt_off0000e020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE020 5624 bytes
SHA-256: b0fd3241f04a48882cd88d7907f8e93f25c16475111bed191c65837b42a5b4a5
font_02_sfnt_off000116f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F6 14788 bytes
SHA-256: a0a93a3bf685fb4419b9cf388cc76c641b6f346e5cf181be7b64ebbf20de7456

Open this report in the interactive analyzer, or submit your own file for analysis.