Malicious PDF — malware analysis report

Static analysis result for SHA-256 46273719708e5156…

MALICIOUS

PDF

84.5 KB Created: 2021-06-27 03:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3297615f72a4c4b8492f01b85a5ff972 SHA-1: 36de53f63ac50838928fe22d91300ea0a3e279ab SHA-256: 46273719708e5156097b0efcca57b5e69a5db2473dcfaf6a43670443b6ad4b80
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The presence of numerous external URIs and link farm heuristics indicates a primary function of redirecting users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://lyonsmcafeereunion.com/clients/a/ab/ab8eb7fa8d7cf94b91f67e7e346c80ed/File/35014665074.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987a72d6745---75223507971.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b73c1bea046---lubijadaf.pdf
    • http://adveotec.com/img/file/15439974678.pdf
    • https://perfecthospitals.org/FCKeditor/file/32494341019.pdf
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16091dcbe8c49c---dujotiluxawi.pdf
    • https://egyiksem.hu/uploads/file/winazataruroga.pdf
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/9uqmmuosbfu2dmvhlphju984pc/89040419499.pdf
    • https://jahanchart.ir/data/files/file/21974194235.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/314f3845555de5d9afefc2bdc606ed38/derudatawa.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160b3c796f3000---rawadojapegibefuwe.pdf
    • https://activepymes.com/pub/file/nosesovemupux.pdf
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c62cc661398---nulogebizuze.pdf
    • http://hhcreunion.com/clients/4/43/43f38dc94a4d709fe78decf5bd9d7370/File/3793171262.pdf
    • http://palakkadtourism.in/ckfinder/userfiles/files/busuka.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/9475d80382fe16a13f4aa937973dbba6/lijetuwonatuzitefozuvor.pdf
    • http://veterina-hrib.cz/user-uploads/files/kazupameje.pdf
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/l3h8krksv6v0tpj3t36v8pul61/16716807011.pdf
    • http://debsluxe.com/clients/1/17/174397649ed9f07baa8f9d9f48c72a4d/File/wovatijof.pdf
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/605d529dc96ca147cb68e68018990a90/66896139125.pdf
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/tkdg5a1vut9pvbhtfhbnnreai4/65390753079.pdf
    • https://alkalacarservice.com/public_html/userfiles/file/vibosulabatixudazozo.pdf
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad1f61220c---raruzaxovobazij.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=vanessa+hudgens+naked+pictures
    • 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_off0000e4c2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C2 16792 bytes
font_01_sfnt_off0000fcd9.bin
e519da205fd86a65250264d21c101c0e832df6a956aef07d8719b5dbc12f53c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD9 10788 bytes
font_02_sfnt_off00011571.bin
aed50dfe0999262e0c2aa8ca09c0895e805b4625da78914b2868a069f9217f78
pdf-font-stream PDF embedded font (sfnt) at offset 0x11571 17496 bytes