Malicious PDF — malware analysis report

Static analysis result for SHA-256 78feada294858978…

MALICIOUS

PDF

82.8 KB Created: 2021-09-05 01:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 7f31980a56beed2310fe63bfa84e950f SHA-1: 75b122317720f4e4640b3ba4720815f39071dbaa SHA-256: 78feada2948589788f88c2031122b2d3e788781ca1cf4a46f049f273f8fd70f2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML and ClamAV as malicious, with heuristics indicating it functions as a link farm pointing to compromised CMS uploads and disposable hosting. The embedded URLs, such as 'https://queure.ru/uplcv?utm_term=blueant+wireless+headphones+manual', are likely used to redirect users to phishing or malware sites. The document's structure and numerous external links suggest an attempt to exploit user trust through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • 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
  • 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://queure.ru/uplcv?utm_term=blueant+wireless+headphones+manual PDF link annotation
    • http://fusen-es.info/yamituki-n/uploads/files/35920362283.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16077c281adca3---bebuzibidokabe.pdfIn PDF document text
    • http://mebell-city.ru/ckfinder/userfiles/files/fazijabeburiwopuluzofoje.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///lidenulikibaxabelowobejek.pdfIn PDF document text
    • http://www.ddu-hk.cz/ckfinder/userfiles/files/18118053737.pdfIn PDF document text
    • https://boyanbolyarski.com/userfiles/file/ruwinevejid.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/nuvibabegudekuma.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/femavimotininetotalufax.pdfIn PDF document text
    • https://isabellepieman.com/userfiles/file/wubumaf.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/0e5fc7cb338a6b2b09bb7e809d9d157e/funozew.pdfIn PDF document text
    • http://nousgarage.com/userfiles/file/duzukedunutiva.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/d3n54m2oll8jufkje22qmus3kb/78258080776.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/3cc4d6b9902049130015992d725d9307/zelanakibubip.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d319a1d7c3---37177183072.pdfIn PDF document text
    • https://internationalmedia.com/userfiles/file/loguwilafixosifisogoridis.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c68297b666---12343107870.pdfIn PDF document text
    • http://vakoplus.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/77370455407.pdfIn PDF document text
    • http://viprealestatebrokers.com/userfiles/files/71375010853.pdfIn PDF document text
    • http://pkynfe.net/userfiles/file/jexikikigused.pdfIn PDF document text
    • https://veterinarycarefoundation.org/userfiles/file/vafuzudowizepigabod.pdfIn PDF document text
    • https://sesconbs.org.br/ckfinder/userfiles/files/jujuligaxasitap.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7A 10896 bytes
SHA-256: e4b1f7ffbb8e41fd3b167e0f2c6a71bb5e5d632df889dd17b6ffd9519a87ba3c
font_01_sfnt_off0000f589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF589 18628 bytes
SHA-256: 597387c71f2ffdb9a33761f2ed5c80100a25d2ca510ff88fb7003d8ead15bf03
font_02_sfnt_off000125f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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