Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0673041ff57ad33…

MALICIOUS

PDF

74.6 KB Created: 2021-09-08 09:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: b70d5461ec8d89e9db46c3ec44d34238 SHA-1: 8696cf649b1740085741b02b4e60a8903bafa1d9 SHA-256: b0673041ff57ad33a435ddc02a0b1bbbb653ed0dd4317bb93ee33dd15aae35ee
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to various websites, many of which appear to be compromised or disposable hosting, suggesting a link farm or redirection mechanism. The presence of these links indicates an attempt to direct the user to external malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://bfr-bialapodlaska.pl/userfiles/file/36198642095.pdf In PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0997c2cff---12508663754.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/4a6db2e3e1ce255609fe404cbb9d86e8/9155437056.pdfIn PDF document text
    • http://kenzoum.org/home/integrity/public_html/ckfinder/userfiles/files/54109148050.pdfIn PDF document text
    • http://marcelponjee.nl/ponjeefiles/file/55492275935.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/21311941517.pdfIn PDF document text
    • http://neoneophytou.com/ckfinder/userfiles/files/vamavagigakumafameb.pdfIn PDF document text
    • https://2b3la571ga-70p.com/contents/files/xafakakeg.pdfIn PDF document text
    • http://shophouse.info/images/files/69347811441.pdfIn PDF document text
    • http://liubeauty.com/luutru/files/sakiduvipajike.pdfIn PDF document text
    • http://noithatlekhanh.com/Images_upload/files/rosalonosasaxepoxukijen.pdfIn PDF document text
    • http://lpxs168.com/filespath/files/20210816015047.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb724f1deb---zafugopoxagedazudexokepu.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160853f0e2e2dc---fibevifoba.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/2fa00924373804fa1ca4b0e65368f3e3/juganikufasidiniwaj.pdfIn PDF document text
    • https://autotronics.vn/userfiles/file/ridavewuborewisitigiper.pdfIn PDF document text
    • https://esz.jp/img/editor/files/dapurug.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/belazewipitaxabudakagap.pdfIn PDF document text
    • http://lightningriskassessment.com/ci/userfiles/files/vilivakalepage.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/6f57c2f77c20145ff7a6ea0683c4ec92/28747662734.pdfIn PDF document text
    • http://hotel-ambassador-nice.com/upload/files/85622990756.pdfIn PDF document text
    • https://radiosmile.hu/upload/file/zuxidiwopapa.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f93a71b2fa7---90613915972.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=who+does+god+say+i+am+list+pdfPDF 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_off0000c050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC050 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD862 16996 bytes
SHA-256: 00b5dcc59195d6ab2295b50efef9f3e67c336128c0c68832e5df4e74f37da234
font_02_sfnt_off0001043d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043D 10848 bytes
SHA-256: 1b11856d282fff28186d290ed11f246fa2efd576d60db9ef634cbe8ecc03cbe1

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