Malicious PDF — malware analysis report

Static analysis result for SHA-256 95baa5dfce656e23…

MALICIOUS

PDF

94.3 KB Created: 2021-07-01 21:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e959cfc20fb7ffbe312f479775e7d73d SHA-1: d7d75fa67dc141a4771f4616a390bc5ad5509432 SHA-256: 95baa5dfce656e2354e8b6bd732ae042d11b426cc7fc2a51b36807ce51476606
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm. The presence of these links indicates an attempt to direct users to potentially malicious external resources, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609538bbdc879---salujixadiradikakigunarar.pdf
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/1b7ff6f228c5a8d9e9a6de11acbacea1/19400999884.pdf
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/t13aank2urredb6sqhsto00o9f/85656068526.pdf
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/0b35661ec6f0b792741ebfa2c32322e7/firomogov.pdf
    • http://seanmore.com/userData/board/file/vanubutidojexaxofi.pdf
    • http://lab4050.com/upload/editor/file/84049520382.pdf
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/bc5da6bd0adf69e020b8316fe8ca2e29/ramusugikod.pdf
    • http://pogservice.ru/userfiles/file/59537628026.pdf
    • http://gapoom.com/upload/fckeditor/file/83921044581.pdf
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/kgc4gq8l6dn7s677qfbif3ngos/77525978510.pdf
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/5bf2769781d19b5ec73fa12c878e6181/56113194639.pdf
    • http://www.contal-farmer.com/uploads/files/79989849003.pdf
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/e16491443b3cf100ca0aeb2b01f35c73/48788337799.pdf
    • http://mobilesamara.com/img/files/file/86744807817.pdf
    • https://nsck-cykelmotion.dk/userfiles/file/97990827367.pdf
    • http://re-view.online/fckFiles/file/voduvumenotale.pdf
    • https://wotfiles.com/ckfinder/userfiles/files/51838888337.pdf
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/8bp3sdfonkolfkp9sb696alj31/93099634516.pdf
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/1dg6iljeplhsscfp9cjeiqhb92/63845656970.pdf
    • http://shlawllc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dodararutovil.pdf
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b1d52c2c3---kamufubanemu.pdf
    • http://lindseyderence.com/userfiles/files/78713544446.pdf
    • https://communeouchamps.fr/userfiles/file/46236952368.pdf
    • https://gulfsupremesa.com/ckfinder/userfiles/files/93135842135.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6f15c6f06---wugorisezimekigo.pdf
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608579ff51524---59907863629.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=solution+manual+process+system+analysis+control+coughanowr+third+edition
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f496.bin
0b7b33dcd73c64a3282750cd320e91997babd60bd36eedfe78aae181704c05ed
pdf-font-stream PDF embedded font (sfnt) at offset 0xF496 2516 bytes
font_01_sfnt_off0001003b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1003B 16792 bytes
font_02_sfnt_off0001184d.bin
0951c8c6e026ed4431232af98bd34ff99cd9bbf2d8f56ce77d2c5a8c7e32ea96
pdf-font-stream PDF embedded font (sfnt) at offset 0x1184D 19856 bytes
font_03_sfnt_off00014e05.bin
26934caaf361504d0bf809b4b80773300727b3987fb8a7214273fb9bf60c4b6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x14E05 11336 bytes