Malicious PDF — malware analysis report

Static analysis result for SHA-256 46203ce0fa8d9b0b…

MALICIOUS

PDF

84.4 KB Created: 2021-09-05 01:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: f0d3e10404501667096f34c955a597e8 SHA-1: fa51653171a294ce25c680ef477a9fe78feb21ee SHA-256: 46203ce0fa8d9b0b93a47649358f08a74f6f62b04bf4c692ddd3dff1d7d38b3c
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. Heuristics indicate the document functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS uploads. The presence of numerous unknown URLs suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://ngoctraithaibinhduong.com/uploads/news_file/37841188842.pdf In PDF document text
    • https://belitour.ir/basefile/belitourir/files/77628858183.pdfIn PDF document text
    • https://afayl.com/userfiles/file/20915199014.pdfIn PDF document text
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/667snvnt0igvnbrb5chm8h1j4r/nupafogixogujo.pdfIn PDF document text
    • http://zoekidsworld.com/userfiles/file/ruxefenobaboposugiwonepez.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16095bd9e3fca8---kusevawir.pdfIn PDF document text
    • https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/idhaojdh1jm770qn6ruiahspjg/zegezunidige.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/vseul1o2a67bp3fgild9io0nk4/82085362086.pdfIn PDF document text
    • http://solamsys.com/userData/board/file/sedew.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/qk0th27flafgjq5rdk7iok3l86/76700032731.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/hvrhvg95i5tgcleq6va16cbn6h/rakuwubosilima.pdfIn PDF document text
    • https://blv.by/upload/editor/files/43214893406.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/07b99426393188feffea12550d0e45f3/42272467025.pdfIn PDF document text
    • http://tienhasteel.com/app/webroot/upload/files/putobufavo.pdfIn PDF document text
    • http://hit-air.pro/ckfinder/userfiles/files/wunubororikapepunowuno.pdfIn PDF document text
    • http://krr-nfe.com/suratnfe/UserFiles/File/padibovijawigusi.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/b364ea3bd6ff004eda95f1484977b87e/bekojimimawedilikiwidadev.pdfIn PDF document text
    • http://ttlh.vn/storage/ckfinder/files/bexikededadajovo.pdfIn PDF document text
    • http://www.kymenhome-etsinta.net/tiedostot/files/zejemedekapawolas.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/c7e2a510b0313baa2e174983f90dcb1c/vedaruwamixozoxipisuge.pdfIn PDF document text
    • http://xn--b1adrijbbb.xn--p1ai/upload_picture/silemikafitakemivugi.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5eecd02202---59810913501.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=asus+brt-ac828+user+manualPDF 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://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_off0000e44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC64 10760 bytes
SHA-256: 020e06bc3b00f5aa598f0db4ee8ada6ab03498288a5ad86e42e787853b4db6f9
font_02_sfnt_off0001154d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1154D 17888 bytes
SHA-256: 8f163d7d29a52b62d4f3b47ed3e05915644b3372401a13a155d24e1005005612

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