Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a7006ca811f1af…

MALICIOUS

PDF

86.2 KB Created: 2021-06-26 10:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 77c752c17097215d59708b192d7163a3 SHA-1: f5667a418b3355bc708d17de4ee28195e77054e1 SHA-256: 00a7006ca811f1aff8656dfffd3da8e8fd5464d347a385f96107407f0f452bf0
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 point to compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://dermalab.pl/userfiles/file/niwasa.pdf
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d19d3dbeca0---83905514861.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c7253cb0546---pofutigofamibud.pdf
    • http://bukharaatlanta.com/sites/default/files/file/4137184881.pdf
    • https://rosenstein.lu/userfiles/files/jujuxuda.pdf
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/41482fad9369d2218716206a9da0296e/81399895599.pdf
    • http://polskienarty.pl/data/aktualnosci_imgs/file/kazajux.pdf
    • http://kadernictvo-svetlana.sk/editor_uploads/system/files/gisaripujufivebizowox.pdf
    • http://www.asap-recruitment.net/upload/file/maluven.pdf
    • http://automotiveenergy.cz/userfiles/file/17696839531.pdf
    • http://targhevaticane.it/userfiles/files/47661606859.pdf
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160c50cde2bab1---59334038854.pdf
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/ic79statg2rkoeavvk49kkrl5r/28346717878.pdf
    • http://banghetretunhien.com/media/ftp/file/sajoposidi.pdf
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/18c98e3e30d478d25063d0fbffb549c4/bitutorosibewewir.pdf
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/f34c10c0c4f2ad9b8206feb84830694d/xonilagubekepurat.pdf
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/476d7e21d5252aac94515dd56c3e0d17/2598358792.pdf
    • http://thegreenlegacykeepers.com/clients/e/e8/e8dc17949b7ef813e9937e453902477f/File/keselot.pdf
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/md9in3novjnm7i3ddlkmil9mq6/96294152083.pdf
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a750ec70a7a---binuxonupuwadeze.pdf
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/kikuwoxubufufafawazowuzu.pdf
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/3uq2kvamgbnifmfk992314ushi/bedaxaxinonuluzunotorok.pdf
    • https://alakharia.com/public_html/userfiles/file/tovudixo.pdf
    • https://digireg.it/upload/xexakokowakazijajijapax.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=harry+potter+half+blood+prince+free+stream
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec6e.bin
f7073ee1936d9310429d4a8c57c7b549ebcf4c3a3c06a610cc232f164f61a1ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6E 17420 bytes
font_01_sfnt_off000119bf.bin
63d578c145367b53fc951d34b7ecd5f2f427b43ae663f61f80ff98f4df72d100
pdf-font-stream PDF embedded font (sfnt) at offset 0x119BF 11132 bytes
font_02_sfnt_off00013344.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13344 16792 bytes