Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a6d0a5dc11be0e…

MALICIOUS

PDF

101.9 KB Created: 2021-07-18 02:21:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dc305b859912aa95640d53516bfde8f0 SHA-1: 9a5ce480392abda8e6d996560243940581125721 SHA-256: c2a6d0a5dc11be0e3722911ce35a5b1dd3d56740b5a518a13f6ee22ef065d154
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories, indicating a link farm designed to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body was unreadable, so the rationale is based on the URL analysis and heuristic firings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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://redsky.tv/userfiles/files/binuxedonupasipe.pdf
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/5klballef9pb3jfa744m83avr4/buzeropalaxan.pdf
    • http://axwelindia.com/uploads/42647234464.pdf
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/730de26ffe7e7fa020d2e661251af5b0/86427916344.pdf
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/f9ab0ldb07e6g1411vgdl69pak/5048696324.pdf
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/0636d0998504507b3c63249bc8956995/baxorofimeloti.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160754393d8cc3---37189227838.pdf
    • http://alphasigmaoverseas.com/userfiles/file/kifega.pdf
    • http://topup-fight.com/ckfinder/userfiles/files/80337759539.pdf
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/q4994r9pjg53cki715rlm3hk8q/kipod.pdf
    • https://estoniapools.com/contents//files/65135400187.pdf
    • http://55pluscommunityspecialist.com/userfiles/files/17590670287.pdf
    • http://vitanova-cattery.com/upload/file/zezewubexuba.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/510cb027ff2be47f63a8b3668dc518a0/xidusedetusovudi.pdf
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160bf7f553c7c3---80161877381.pdf
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c7147a1558---retixisexumonanumugesuz.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a1037446e4c---843984528.pdf
    • https://clap-bas.com/userfiles/file/zokozanorireji.pdf
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/105ac4c222e62720f3438ab6ed9b30d8/34971237733.pdf
    • http://kwong-cheong.com/userfiles/54364245521.pdf
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607c008200136---61924125850.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/asq1lltlhat3emcuddlv0s7os2/manojateruluwivejujalotib.pdf
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/fbcc20ee9266481841f55a442c35e287/reputoperoreduvatowi.pdf
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8158794b0---vesuni.pdf
    • https://eternalbliss.net/file/wemuxexusamufalavilirimu.pdf
    • http://profil-metall.de/content/uploads/file/waloxavategeforawowovefex.pdf
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/96f9f9757610bbd963ccb74a97afb9fa/vixowozezixezogex.pdf
    • http://jikaramen.com/uploads/files/69472974658.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=compare+and+contrast+short+passages
    • 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_off00012b2a.bin
cfa5da60f40ca3d4daacced3bd5058da6326b7ed447c36a8578c814b53cfc084		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2A 17468 bytes
font_01_sfnt_off000158cb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x158CB 16792 bytes
font_02_sfnt_off000170e2.bin
2fb378db8c84e915fba697cb6a3370b4c2e21772ff73dcf703a2faad99a61f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x170E2 10856 bytes

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