Malicious PDF — malware analysis report

Static analysis result for SHA-256 eface076d24dd2bb…

MALICIOUS

PDF

87.6 KB Created: 2021-07-02 08:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 19504744865fbf876891d91dfa060d15 SHA-1: b2acde8a3f05eca9ee41bfe3869fb297d638cd12 SHA-256: eface076d24dd2bb9f274906d77df21224649eb5b6a85acdca7d449d47ea1dac
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous URLs that point to potentially compromised WordPress sites and other domains. These links are likely intended to lead users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://queure.ru/uplcv?utm_term=i+ignore+him+and+he+keeps+texting PDF link annotation
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/ki42rqkvnko9landbbs1eoe1mo/vuzimezififosipasi.pdfIn PDF document text
    • http://bnblspecialities.com/userfiles/files/mipale.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/90673864490.pdfIn PDF document text
    • http://webinside.pl/userfiles/file/41136594967.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/8474dbbfe8990c3c567c9421ae369bee/melibudap.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/b60a25b174e725dc6153ce59bd38b120/surewitegubotejorejadove.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c5ed3f38b---74323586984.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/5b0eb8797eee6793e31bd9dbad50d715/tizesuxufigolefirirajodox.pdfIn PDF document text
    • https://la-klamm.org/Files/files/jadojogagenoka.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/cab38940ae02e4483965d5de5f1a01a6/51771009180.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/de561da7822074ceb5aacf8748db6ee5/koluwato.pdfIn PDF document text
    • http://togetherwewalkny.org/clients/2/24/2411cc079aa0f0d7fd57f81c6163ecfd/File/81098016959.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/xazitigi.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160770c18969d1---parifezamakekivopinude.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080b9406970c---84674557387.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/da96a488f2e538708835750207e03773/55982591831.pdfIn PDF document text
    • http://sanmarinreunion.com/clients/c/c0/c0747301521b2fcd71a0106c9132c7e7/File/vaxewifemabewimimakax.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16092014914c7a---71986717476.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a054c48a74e---makinaxuvunavirol.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/12a575991fcddcbb40335cc2a5f1b5be/xijeriwajapa.pdfIn PDF document text
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/5ak05t0pf0i6v54t3vm87659vp/gofajunefisibaxovovu.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/6164bfb312e64df2dc83ef06246a6489/rolur.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_off0000f57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57C 10940 bytes
SHA-256: 156d1c5ec23901833558f7a0d099e2abc3cb7c20ae492eb49f8e48f8cfc13240
font_01_sfnt_off00010e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E68 16684 bytes
SHA-256: 7c7a1cf09ea068ee9f7703d85e6ba0a162495db2871fc6ce0534d0a918cdf3c0
font_02_sfnt_off0001393f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1393F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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