Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0aa8540b9ad51d…

MALICIOUS

PDF

63.1 KB Created: 2021-06-21 04:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 914c601a349f5efb64756f3f54d588cd SHA-1: 73ab66b975b47034a94b8fb9b02251e32de971bb SHA-256: 5b0aa8540b9ad51d6e64060e0f6cec1b19956fabaafa132ac2dcab4eb4274909
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains a link farm pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to movie subtitles, likely intended to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f59c2e9a48---safavakulerujenijarunazas.pdf In PDF document text
    • http://pnmanagementsolutions.in/uploads/wogujipezabipajuju.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/dewamelutiseniwadikon.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/958f1155486cda4e693447a5c169fe7d/39392320159.pdfIn PDF document text
    • http://musikpark-live.de/userfiles/file/dapapo.pdfIn PDF document text
    • https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/kv1bqeoub2ecalpgpb25uemf8q/kebibesagiju.pdfIn PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/6127b4e9e7ead27b4bb953e45c786ab4/15310758237.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/clhl45hs9fnfket30re985jf8q/57250140261.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608de5ed4d044---7663332527.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/cp1n8jagdmktsm293l3sthqkns/mupir.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/40276658503.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/3a468568d635e99307c1325a3acf7fa1/xuvipufigatabebonawasuvep.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ef1ade178---3099716516.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/9482a7d5f2418238481736dc6a29935b/58282000218.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/8708ed3933f3e117fcb25db25ac5fd1c/91639771318.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/gfdet76qhpb5jukd4imi6mh787/minilalagogibazofutas.pdfIn PDF document text
    • https://hazeloyun.com/calisma2/files/uploads/zezotatunebisivamikirix.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c885ffc1713---75654155002.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=1983+malayalam+movie+with+english+subtitlesPDF link annotation
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB580 5868 bytes
SHA-256: f89b164d461a42f01851a4470bac287ea36a8577121353730146d8cfe0824852
font_01_sfnt_off0000c96b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC96B 10528 bytes
SHA-256: fdbbc1485c3702d71dcdf63a9d5c0c9e576167eac9061ab3f82441b3be0cb068

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