Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b5bdb4f4111f7d…

MALICIOUS

PDF

84.0 KB Created: 2021-09-20 20:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 62184ecbae936f415d522fdd581d65c4 SHA-1: bac3f0e3c356bd855f29391f9c8b7c9e7abcef6a SHA-256: 65b5bdb4f4111f7d718547285be1ba27fe829e318c3998a50c24bcb0cdc0fceb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The URL `https://philabc.ru/uplcv?utm_term=download+playman+extreme+running+for+android` indicates a potential lure for downloading software, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/uplcv?utm_term=download+playman+extreme+running+for+android PDF link annotation
    • http://www.psoealora.es/ckfinder/userfiles/files/35194186607.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/161371533852e2---85103882858.pdfIn PDF document text
    • http://emanuelmlevin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nalubi.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f38262a23d---zozejevavanaputewixot.pdfIn PDF document text
    • http://savages.lu/imagesRTE/files/tisemezodedoje.pdfIn PDF document text
    • http://rnralpha.cz/res/file/94486507997.pdfIn PDF document text
    • http://tartak-monis.pl/tartak/images/file/pamote.pdfIn PDF document text
    • http://www.satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/37116761740.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161349d9f85d33---mipilemepaxiwamebu.pdfIn PDF document text
    • http://oletrans.sk/editor_uploads/files/36476572642.pdfIn PDF document text
    • http://magyaringatlanadatbazis.hu/dev/_user/file/tofegorizujusigu.pdfIn PDF document text
    • http://www.specemc.ru/upload/files/mitevoburopelopevoranoro.pdfIn PDF document text
    • http://tokyoto.pl/UserFiles/file/32003753056.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/1fbadb03da29e4d36fe0a6a68c1d51fa/84678311647.pdfIn PDF document text
    • https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/wofujopoxine.pdfIn PDF document text
    • http://topenglish.sk/app/webroot/gallery/files/99546155455.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/rabivozijigugoxozari.pdfIn PDF document text
    • https://adrfarysz.pl/userfiles/file/lafitamifobatiwitodek.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/nisorap.pdfIn PDF document text
    • http://yieldpharm.com/upload/files/kezesugelut.pdfIn PDF document text
    • https://egf.tw/test2/images/file/dokigo.pdfIn PDF document text
    • http://lmtechsolution.com/userfiles/77343804787.pdfIn PDF document text
    • http://zagazzo.com/userfiles/file/21444645829.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_off0000e2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C4 11076 bytes
SHA-256: b205c8a467eec4814ab0dd06c15e9b6b935531badf280a4ccd571f6662bb3e51
font_01_sfnt_off0000fc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC61 17532 bytes
SHA-256: bd245853cf901dd313b23b1e8e3141e7c6ac14816de2d49a7747e4f584b4be40
font_02_sfnt_off00012a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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