Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dde1405fd272d0d…

MALICIOUS

PDF

94.9 KB Created: 2021-07-19 02:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f3c440d7cda77ff829dea477fc92ddb4 SHA-1: 19034f64e4d01a76887dd9a911643c83cc19bd58 SHA-256: 0dde1405fd272d0d5f7c8519bbeef4fc20afbc38587ad5b0e2e704e39d9a870e
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to distribute malicious content or phish users. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://aftaplan.com/works/peepsparty/html/upload_files/file/guxanizazup.pdf
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa85bdd1a3c---tojinuxexunenagudexibir.pdf
    • http://canxetaianhduc.com/images/file/kogotavulatalonesa.pdf
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/92fiq36jq7cq66jc0871cljkk4/jebevil.pdf
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607727c2951e4---19807698062.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/6e887f37c6273884900ea50436c8d1c5/66919589729.pdf
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820f36ba3b3---12432258174.pdf
    • http://henri-ruch.ch/doc_pub/file/fawawixebomatug.pdf
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160adae94d25e5---rekuleroluxogupi.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e6d2cd176---lawisuxasuxegexisini.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77671463df---tagimudezutosagiraj.pdf
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d1fe9c6d8---79252343206.pdf
    • https://maplesservice.com/wp-content/plugins/super-forms/uploads/php/files/e956bb7676803675641125ac134d97ef/82268215837.pdf
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/sb0g4a1cvbn9g5glqd5phlhc0k/3286133879.pdf
    • http://austria-ex.com/images/blog//file/30772768064.pdf
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/j8okv4o4uohndjfq4aii306dg4/rofagumajon.pdf
    • https://acrgruppe.de/userfiles/file/xunosebepedekumojubimipo.pdf
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/jn37km6sdfaa2r5jo9o5e37953/mikuzozevi.pdf
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef381cc336---pepawop.pdf
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/9d8b589be33cfd032609c3cc5424a598/2993098941.pdf
    • http://albino-pitti.com/pub_img/file/wosudutexovenawe.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c01462811a---38212528039.pdf
    • http://relatives-united.com/clients/75139/File/14020926847.pdf
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ce3c2b71961---mamafetafa.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=it%27s+a+new+day+it%27s+a+new+life
    • 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_off000111b0.bin
c0b678dfbd3d0861edd3ecbd610fad8db7f2d0dd135253d9eb861617bac3b0a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111B0 17112 bytes
font_01_sfnt_off00013e5e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E5E 16792 bytes
font_02_sfnt_off00015675.bin
045abed39c56ab3afb3ed2859521a29b7cb870d01045e34f196f7b9bea653d9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15675 10312 bytes

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