Malicious PDF — malware analysis report

Static analysis result for SHA-256 baab09e293bf7861…

MALICIOUS

PDF

83.4 KB Created: 2021-07-01 19:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: ec60a41b8b321c6e697011aa9f4280e2 SHA-1: 96a42d1c68f4dc7593853351f5bece209358151e SHA-256: baab09e293bf7861bec1a19c45424cefa0288296b4154a8a00f0815fb556d2de
156 Risk Score

Malware Insights

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

The file is a PDF identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous embedded URLs pointing to compromised WordPress sites. These links likely serve as lures for phishing attacks or to distribute further malware. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a pattern of using disposable hosting for these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/c067114b32f0ccc2a20c017beb4acf6a/fenuri.pdf In PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/b0ec305f0b0d9a0a4cbb6d79369b96b7/28768445743.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/e52cc86719102c79eddc3fd2e6b1f064/rurusazukik.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/e2507275330496aa1d5f37d9c2491176/33885614721.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5a35259b80---fipekepurifexupot.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607681c2b0cb4---32382330994.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/romelepitudavolesusapu.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/30d4c4fec5e3d31eeaf4ab0dc936fdf6/rolobusenudulixuno.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/vggqbc5lmgp0qfe7pu8c2vkb64/63498962226.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/48582587563.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/qrj48ubjqqmrgqphf39rs7e2bt/warofovuzofajonewagemito.pdfIn PDF document text
    • http://bhs-class1957.com/clients/35434/File/waxaretomerimino.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/3id6em69psm2iq9h1p113375v8/zaxozosabofonojiwod.pdfIn PDF document text
    • http://studiolegalebisantis.it/userfiles/files/24293795218.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/widodijoperakol.pdfIn PDF document text
    • http://keacg.com/upload/files/nolejuzanorisinu.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/mofanusitelonidifoxopa.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b8f351674---99073934444.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/2807eba097cd90cb054a41681c0d43fd/bapopowizorotokam.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/vhifh02u1rcbs9n24nhlpitbaq/dopeviroxagewiwefo.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/78ba6da8115f05d737e3d334234b4da7/58825043330.pdfIn PDF document text
    • http://selfmadefilms.nl/userfiles/files/64779591955.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/db38c3880feb3ace0507fc06d5e3ece0/68310443723.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/cc4cc661e5ed7163fed4949fe5b9fcc5/guzimusekivomubitopavaxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=dragon+ball+super+shin+game+download+ppssppPDF link annotation
    • 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_off0000e33e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE33E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB50 16720 bytes
SHA-256: cf8b6edd4195ca72f98610fd4e5e19a2b272171a6d7801d7a2a4228981eb4a2d
font_02_sfnt_off00012706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12706 11068 bytes
SHA-256: b4dbfffa8072b41ba7ecaa4cd9c18a40b8b88796d994d83ab707daf66ee1ea5f

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