Malicious PDF — malware analysis report

Static analysis result for SHA-256 702a28af6967d057…

MALICIOUS

PDF

90.6 KB Created: 2021-09-01 13:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 0542ec96047ef825292c180cc5b0ff0d SHA-1: 448906e64a8d7a0d48a663170bcbbfd7f9ad1ef1 SHA-256: 702a28af6967d05705e54ad13fc7dafc207f252dc685440f67d68f891730fc44
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and link farms pointing to compromised WordPress sites and disposable hosting, suggesting it's designed to redirect users to malicious content. The presence of these links strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://allytemp.ru/uplcv?utm_term=the+secret+life+of+walter+mitty+short+story+setting PDF link annotation
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/7f4409979c7710ee73ddc37939bc9f13/siropemegetilo.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/3750096cb680a2376b9a37d8300dc401/zijepot.pdfIn PDF document text
    • https://maxflowfans.com/userfiles/file/sasajat.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ef1604c50---xadutek.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9a03cabe71---dugawufajowonunivobuxun.pdfIn PDF document text
    • https://alzubidi.com/userfiles/files/denolunujirugatasoxomafoz.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/014036467d2fee636b9c229e4f3c70b0/nobibudu.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/zezutusovawafuwedifasinu.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/bazozamivad.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160931558c0e4c---93199706429.pdfIn PDF document text
    • http://cuahuyhoang.com/media/ftp/file/nileluwegaxe.pdfIn PDF document text
    • https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/74e5b3073ac081929593eb284819e008/mojelefebojogifofama.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/ab17ae9fe364c0d8de454b0ae744f1ab/pukezexazagozoze.pdfIn PDF document text
    • https://armandofalconi.net/userfiles/file/mifudifa.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a3432690b65---10253704566.pdfIn PDF document text
    • http://www.specemc.ru/upload/files/14346342867.pdfIn PDF document text
    • https://nhatngudongkinh.com/upload/ckupload/files/tuwemodapiku.pdfIn PDF document text
    • http://aeklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wepadomut.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/7e5ab6264fe3e07e001aec29943a5533/73909313313.pdfIn PDF document text
    • http://centromedicoveterinarioadda.com/userfiles/files/kosen.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160746883601c2---pabikux.pdfIn PDF document text
    • http://nexxosrealty.com/userfiles/files/10827101157.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093017120d9e---fodosupazexuvewaxopalaga.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_off0000fcdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDC 18132 bytes
SHA-256: 5f25391517816e41285eeaeafd804bb8b8213788fde08463f4387b7a14ec5b97
font_01_sfnt_off00012b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14396 10944 bytes
SHA-256: 9029a3fc58b4b814400921065157197aa84d248feb6cdd86389bbd3533cde66f

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