Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabadf86382273e7…

MALICIOUS

PDF

84.7 KB Created: 2021-07-04 02:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 75325e3555c71cb54ee9404cd96c3769 SHA-1: 05138054c74b465cdd4bf252a0e36462ecb24182 SHA-256: eabadf86382273e72b5f309711d8dec56ddb7b6851ccbb9c64b798f036d1f3f8
156 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous URLs, many hosted on compromised WordPress sites, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose beyond the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://newtech-utm.pl/userfiles/file/93758256524.pdf
    • http://insureacompany.com/userfiles/file/zoroti.pdf
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/20b215659a404596fde6982b36869656/19166357873.pdf
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/cjd7317r0jettrama6iral6vo5/32631920819.pdf
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16098b74e60b63---6018524874.pdf
    • https://altinhediyeler.com/calisma2/files/uploads/47112913714.pdf
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/fkrkb3rqrp2ks1sjf213nicmp4/nejijela.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d335efeaf---87593097158.pdf
    • http://come2menorca.com/images/file/36361706767.pdf
    • http://csc-021.com/userfiles/file/20210628021350_wmgr93.pdf
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/3mnbh1n6276hlirjh00056u2dg/9823676511.pdf
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/vv8m3b3ri35gk7klicuin6m1rp/48832261097.pdf
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/bd7f24be5e1e97810e5d893209dc80e7/bigopezozebipewejase.pdf
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/3439b3788714b9edcaf813dde72ae32e/85734558843.pdf
    • https://zzhqhi.com/d/files/jemad.pdf
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/caa35ecc93317194e31f5bacd0e4ac63/losutasonukedem.pdf
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da63952b1f3---lepopofifanovisodog.pdf
    • https://panificiopasticceriabattaglia.it/file/80863379692.pdf
    • http://cphs1970.net/clients/877309/File/40264304005.pdf
    • http://vidol.nl/userfiles/file/22275211326.pdf
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/hacqd3pvj0k452q5fcevc0n4h1/80903707463.pdf
    • http://iltorg.ru/upload/file/woranimofagopuponunifo.pdf
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3381294a34---2579086235.pdf
    • http://verdantnorwich.com/clients/3/30/306756bb587dffcd11ca74610d845a16/File/dibudoretakivipelogenugur.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a51c563396d---mukerobaxosoxosuzofuf.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=convert+exe+to+apk+on+android
    • 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_off0000e75c.bin
ada3e8aa4172536eee0a1bb239fc2533a79d589ffbde1b7e4e3526f6b7cd0b4a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE75C 18560 bytes
font_01_sfnt_off0001157f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1157F 16792 bytes
font_02_sfnt_off00012d96.bin
e3d4d0c4538a853d7ff5cff9a6171097d1ae74d89479d4754c5707e69453df92
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D96 10460 bytes