Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c117c3a35d339ae…

MALICIOUS

PDF

90.6 KB Created: 2021-09-13 12:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 31030b8a3149d4afef5cec6977c0a55e SHA-1: 2b809e38caa2140c2be5f90aa3dca95b99132d46 SHA-256: 9c117c3a35d339ae2e4864e9a056dff5e96cd8f6c796698c52aa9da534a5160f
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are part of link farms hosted on disposable or compromised domains. Heuristics indicate these are likely used to direct users to malicious content or phishing sites. The ML classifier and ClamAV detection strongly suggest malicious intent, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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://huntic.ru/uplcv?utm_term=free+all+movie+downloader+apk PDF link annotation
    • http://sushimura1.com/uploads/files/90664710359.pdfIn PDF document text
    • http://merwepizza.com/upload/file/mujolejiludozixod.pdfIn PDF document text
    • http://fasson.vip/images/editor/files/wejibuvebagadu.pdfIn PDF document text
    • https://weishinclinic.com/uploads/files/202109080802165563.pdfIn PDF document text
    • https://cosplay-expo.it/ckfinder/userfiles/files/6463119416.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/161344c1c5fc96---pemubirexoforitigaru.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/zapevimeboji.pdfIn PDF document text
    • http://milkexim.ru/imgeditor/file/668175206.pdfIn PDF document text
    • http://donleroy.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/livixokokixa.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319c6dea41b---85209320573.pdfIn PDF document text
    • http://cocoon-source-harmonie.fr/public/file/jekosodikalufuzegisewepaw.pdfIn PDF document text
    • http://rnralpha.cz/res/file/gulosefadiruwixekimasune.pdfIn PDF document text
    • http://innovad-ltd.com/userfiles/file/zatanifadubejesisukikes.pdfIn PDF document text
    • http://tearose-kitchen.com/sites/default/files/images/imcefile/suxodudagaxelifibiji.pdfIn PDF document text
    • http://rosesrealtyhomes.com/userfiles/files/87632589088.pdfIn PDF document text
    • http://ducnhua.com/upload/files/nebubuvis.pdfIn PDF document text
    • http://www.niziointerior.pl/upload/file/kuwub.pdfIn PDF document text
    • http://msiutilities.biz/documents/zisofajonukituxu.pdfIn PDF document text
    • https://spvi.cn/filespath/files/20210906070642.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130a44b5812a---49466369228.pdfIn PDF document text
    • http://tzsunup.com/upload/61263920241.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/65950469909.pdfIn PDF document text
    • http://hsaltsj.com/uploads/files/fubusabagabadobabulegi.pdfIn PDF document text
    • http://www.psoevalledeabdalajis.es/ckfinder/userfiles/files/13858382385.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000f6d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF6D6 19192 bytes
SHA-256: fbd27a2d07ab87147f657af3cd74b7e02857e21c50543fefde56d433b6f3f656
font_00_sfnt_off0000df05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF05 10508 bytes
SHA-256: 542208fc1456095438aef04f9fefb1bcfcee5de95ce8644f037b13eda3632bd0
font_02_sfnt_off000115aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DBC 17960 bytes
SHA-256: 645ff74d18af29914ef15fe0bd008ca06266cd53375d2e83ff58628c47094c09

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