Malicious PDF — malware analysis report

Static analysis result for SHA-256 095760203a7c8bf5…

MALICIOUS

PDF

84.0 KB Created: 2021-09-15 00:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 4bd618f167bcb5f38b0ec8430ae72c8e SHA-1: 5f7a18681ca6f4179208acfbaed82a8310497a95 SHA-256: 095760203a7c8bf57885f65906bd14853fd852f8ce6ad1948c1bbb291efe5940
216 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting an attempt to redirect users to malicious content. The document explicitly requests sensitive recovery information, such as private keys or backup codes, which is a critical indicator of a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://smidgel.ru/uplcv?utm_term=one+click+root+free+download+for+pc PDF link annotation
    • http://optimumnieruchomosci.pl/uploads/userfiles/files/68362053159.pdfIn PDF document text
    • https://phongkhamtamthan.net/uploadeditor/files/92225241607.pdfIn PDF document text
    • https://hotlinepro.in/admin/userfiles/file/pedirimeneriwulefunagabox.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161410dc5be468---57752237838.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/91767fdb563f85122d5c84dcdc371e8e/71740811258.pdfIn PDF document text
    • http://snnet.kr/board_pds/fckeditor/2021/09/file/potowivurejoxeramod.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161316881396ce---16608370434.pdfIn PDF document text
    • https://limsurempat.com/contents/files/vujesojozowibubovo.pdfIn PDF document text
    • https://biholka.cz/uploades/userfiles/file/pudufezefixido.pdfIn PDF document text
    • http://sxcec.org/userfiles/file/keledifudugadulinimud.pdfIn PDF document text
    • https://cs168.tw/upfiles/editor/files/91619507399.pdfIn PDF document text
    • https://ksi-system.pl/editorfiles/file/25907046426.pdfIn PDF document text
    • https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/powusufosipifusi.pdfIn PDF document text
    • https://confeccionesruiz.cl/UserFiles/File/97243949144.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/c10eaf80a1bf99fc70c061890ed591fc/17491856873.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/8065l5dvle7etg90pgjnsab037/95031221359.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca91135d89---24554458308.pdfIn PDF document text
    • http://njchemland.com/upload/files/43865727431.pdfIn PDF document text
    • http://www.dawnrotaryclub.tw/UserFiles/files/57836382661.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134f7d48b40c---sefimazabi.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410d6f8e044---52860766987.pdfIn PDF document text
    • http://kamkmori.cz/ckfinder/userfiles/files/mawofovu.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB03 10648 bytes
SHA-256: 9839dcbd8ca2725fc38891ba0c4617d00024ebb12fee1a7616bdd452b8db1440
font_02_sfnt_off00011394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11394 17784 bytes
SHA-256: 00c7f70e24ef14de98fa6f2eb163ed18e4f275aa021c86033c66e495f29a2ebf

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