Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dcdcee2ddb15e7b…

MALICIOUS

PDF

85.4 KB Created: 2021-07-18 00:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2231dcd2ae2dffab9a6986f893bb5789 SHA-1: 7f90562fca486491d5dedd69f7c75c137c63c08c SHA-256: 2dcdcee2ddb15e7bc434c1ee323aa3e7e8650588ba4a5c596b190b2c973ce39c
196 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a payment redirection lure and a ClamAV detection. The document contains numerous links pointing to compromised WordPress sites, suggesting a phishing or financial fraud attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/2327b1c499bbc27660276aa68279fd2b/nagodinelugikobumadurogi.pdf
    • http://starinviter.com/ckimagefiles/81366374718.pdf
    • https://alshaabcoop.com/userfiles/file/retatazuvu.pdf
    • http://nhasachconggiao.com/luutru/files/9758087601.pdf
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/da01012c02f2f6d5eafc4e0582956b0f/60231224804.pdf
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/b65dde65e820dc2e19034fae7dfe0c7f/dalosowe.pdf
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/60f199a167f23ddfa9fad0f6bec87a3d/29204640482.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160f037c320fd3---36350244000.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/7e6d68a1d78672353c2ed59997f8779c/zomepegujugo.pdf
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/692c2a8dd7bcafdcefebb732b01e7cfc/23316216106.pdf
    • http://op-gold.com/ck_image//files/wegepatagojor.pdf
    • http://tebsc.com/clients/84181/File/bevekamaxikov.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b76412eedda---gekusurikaxorelixo.pdf
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/17eb1587a7e5cdd2e3f5bfe7ed0c386a/lipowekapomevataxurej.pdf
    • http://migger.dk/userimages/file/48432612688.pdf
    • http://spc1991.com/ckfinder/userfiles/files/21923962236.pdf
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160d03c621d146---lumetubinukabibava.pdf
    • https://sahyadrisevasanstha.in/userfiles/file/ralexerifed.pdf
    • http://apcmagon.com/userfiles/25459990554.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e7c8574343b---41290525618.pdf
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/n6s6ihpsodgoksl5hogt73t97u/53813935420.pdf
    • http://skogsformedling.se/bilder_umeny/File/15788363546.pdf
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/eebaa1e56d05e330cd1d42fcfffae71a/navarirozele.pdf
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d856ed4e248---59227129075.pdf
    • https://abugfreemind.com/userfiles/file/78714644464.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=cash+equivalents+accounting
    • 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_off0000ea40.bin
9fe2d9a13a9efe8e7e97b70ab7ef59dec599e8520e0f55fa39b627334819c936
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA40 10752 bytes
font_01_sfnt_off000102ac.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x102AC 16792 bytes
font_02_sfnt_off00011abe.bin
05ea4ffa3d104863b21401e4c036cf311d108c4f26e2c234b95dceb29e022153
pdf-font-stream PDF embedded font (sfnt) at offset 0x11ABE 17440 bytes