Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e369ad07135bc6…

MALICIOUS

PDF

85.2 KB Created: 2021-06-28 13:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7cdc42aa5b38e5f328155434e3665964 SHA-1: 983c81246e4d4b54ef61b98499ce6ac390af38e0 SHA-256: 32e369ad07135bc6d698cd9405c68593278c22c4c6f8c9ade691662e75437d00
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that point to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The presence of a 'download' button lure further supports this malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://414movement.com/wp-content/plugins/super-forms/uploads/php/files/3408b5e2140cead47254d8518d0a073b/72368877824.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606cea5622a60---65895506941.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/242aae558d972bbdbbcc357e92b3a2ac/sevogumalapiterezexo.pdf
    • http://szkolka-wiercioch.pl/files/file/tegekipulilekapur.pdf
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/f10f3f3ab6963a39ff748927e0f4bacc/zujazowitotavaxadiku.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/f4q0o3gg1h3kbtnfqm01vru8j1/31357022073.pdf
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a533b6551c---dixezogagevolovelavanezak.pdf
    • https://remoteworkerclub.com/wp-content/plugins/super-forms/uploads/php/files/4d21a9696a217f5e6a85c04e76e444f8/12850351778.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/a1331e1d74fb1074789f281129b280cd/xonutorokilagaxufep.pdf
    • https://vestol.bg/files/file/58586240884.pdf
    • http://envigest.cz/upload/file/89434416801.pdf
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac09fe59e3b---74824022064.pdf
    • https://ceral.pl/ceral/pliki/file/9004274804.pdf
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/dbff442883887a97ef1d7933a6200bd6/87995786927.pdf
    • https://jahanchart.ir/data/files/file/82723091264.pdf
    • http://alexhofford.com/temp/files/file/zejawe.pdf
    • http://sun-tes.ru/files/file/jixurejuzeme.pdf
    • http://border-inn.com/CKEdit/upload/files/desunonu.pdf
    • https://premiumtrade.ro/ckfinder/userfiles/files/vifesezejerorutixuta.pdf
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1608263727c4c0---96689311574.pdf
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f1bc02fea---97893544992.pdf
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609b3580c22e9---gewizatamatotubigumewunog.pdf
    • https://suma.ca/upload/editor/file/98082398535.pdf
    • http://k1a.ru/images/files/file/suxuzit.pdf
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/6b1f8e894e81d668517a5e188c2bd617/budekobopujivogalasege.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=berry%27s+bullets+load+data+223
    • 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_off0000e76e.bin
dca2488ad92b319501a6d72fab1580eeb55412820d3392e78fd0e291784a9615
pdf-font-stream PDF embedded font (sfnt) at offset 0xE76E 10776 bytes
font_01_sfnt_off00010098.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10098 16792 bytes
font_02_sfnt_off000118aa.bin
766885e938661b8c3bf78f2f4a3c98d9f61124af12a8dc2698b590eb34b2ddf3
pdf-font-stream PDF embedded font (sfnt) at offset 0x118AA 17260 bytes