Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce47c309801febb…

MALICIOUS

PDF

76.7 KB Created: 2021-10-14 03:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 01317a8fca6543e1c3dde342020e8c46 SHA-1: 1055272d412fd99668a9f0e99fd3bc17051bb4ef SHA-256: cce47c309801febb82ac463a373e73088c60e468d176dd0e020c22a2e3b23350
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=the+end+is+near+bible+verse PDF link annotation
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/4453f80c71e3640a562d60c774904f2d/wimexovir.pdfIn PDF document text
    • http://kyochonbuenapark.iorderfoods.com/uploads/files/sugupibawodazimix.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/18547173613.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614306b94e044---7939806960.pdfIn PDF document text
    • https://olgunbey.com/upload/ckfinder/files/67531138500.pdfIn PDF document text
    • http://www.sainteuphrasia.com/www/js/ckfinder/userfiles/files/siferopuzuwidenevaxileroz.pdfIn PDF document text
    • http://enjoyisagenix.com/ckfinder/userfiles/files/kolemez.pdfIn PDF document text
    • http://coconut.hu/userfiles/file/gukogopitazonokinonem.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16145895bd995a---97266598927.pdfIn PDF document text
    • http://bygreenpure.com/userfiles/file/zuxomikatapup.pdfIn PDF document text
    • http://msslink.ru/userfiles/files/roxixik.pdfIn PDF document text
    • https://ocloud.millionserenity.com/images/upload/files/jilulole.pdfIn PDF document text
    • http://gmei.lt/ckfinder/userfiles/files/88572278201.pdfIn PDF document text
    • http://clinicaveterinariasangiacomo.it/userfiles/files/61438943356.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c7d5d56309---bomodawexakupedodanilox.pdfPDF link annotation
    • http://hanilkwanla.com/uploads/files/92890520938.pdfIn PDF document text
    • http://traslochimontalto.it/userfiles/files/99442579584.pdfIn PDF document text
    • https://gionggiacam.gagiongvitgiong.com/ckfinder/userfiles/files/rosojamabab.pdfIn PDF document text
    • https://ubk-sad.de/azubi/userfiles/files/35866236647.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/gegatobudakanepes.pdfIn PDF document text
    • http://gugugroup.com/userfiles/57605885897.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1615fdc6158898---zakaf.pdfIn PDF document text
    • https://printjet.pl/pliki_user/File/7891802775.pdfIn PDF document text
    • http://xn--eyt274i.com/upload/files/dozurafunajigefa.pdfIn PDF document text
    • http://hotelamadeustorino.com/userfiles/files/guzivaligaxa.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_off0000ca72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA72 10296 bytes
SHA-256: f7face1fdd2cefda2368f20d345fba210a5e3429ba74de775496fcf4b3699661
font_01_sfnt_off0000e184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE184 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF996 17180 bytes
SHA-256: d107378f31ee7ce030b1cf6693da819bace4f73f269abdea98b8815e3f58482c