Malicious PDF — malware analysis report

Static analysis result for SHA-256 530120aacf9d856f…

MALICIOUS

PDF

87.6 KB Created: 2021-06-26 01:22:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e8b9235b0769fdb834c899ddfb7e053d SHA-1: e36bd170dff1bcb51529d11817e26dd98d52216e SHA-256: 530120aacf9d856fc2adf82c4c1187c7469c2f0548db77e739f601ebc3b9ae60
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a payment redirection lure, instructing the user to open a password-protected archive, likely to bypass gateway security. The document contains numerous links to compromised WordPress upload directories, suggesting a distribution mechanism. ClamAV also detected this file as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607496aca6fad---xaxipogedaxajasuxikexafi.pdf
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/8410c2006b3c4c507d7fe65fb99bcfa7/3660029761.pdf
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160973b6edce3c---kokunoxa.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1607d08925d17b---gaberodimitopaj.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160800c9f65ac5---42417966846.pdf
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/44996436439.pdf
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/40011594c50b529d6d85e3183647b6a7/legojikotufenijogakurez.pdf
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/9r2fn131p1b7d0pocvmdr3shch/55001358957.pdf
    • http://alexanderkanevskyartgallery.com/clientMedia/file/35350580481.pdf
    • https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/vapuko.pdf
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a962861d2e9---veforozunibin.pdf
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/rta6o0obuparmk8qatv84tnb54/21972248822.pdf
    • http://mmbc.cz/_data/user_files/file/nofikivimarenowilapagosu.pdf
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/44769f3538a9eaf991f5be2c41e0cf2c/90135415330.pdf
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6564aa732---16138913073.pdf
    • https://aucordechasse.fr/vosImages/zonasebuxitorupetuwep.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a6429d7984c---78259136070.pdf
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1608c9ad3d16e4---nawetavemujukat.pdf
    • https://music-group-store.com/upload/files/wevutijunomutoboluxaki.pdf
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810ebb9b23c---jebuxufixuxoloda.pdf
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160882a6995e2e---mejozejemabafujuxasatilo.pdf
    • http://rexant.by/upload/editor/files/96112881622.pdf
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/i19hlclgba5dom62f5q532udom/vofojeju.pdf
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/ejh73upf8oakcb51cbls09rcae/50583661653.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=hotmail+password+recovery+online+free
    • 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_off0000f216.bin
bceda0afc96723ebc7a19358148b03dce860e05573fbef1751cd9c26fac4407e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF216 17360 bytes
font_01_sfnt_off00011f6c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6C 16792 bytes
font_02_sfnt_off00013783.bin
d21764b03365f37d17d0668a1092f09a6e7381c142ec72bf1c263f5faf734492
pdf-font-stream PDF embedded font (sfnt) at offset 0x13783 11040 bytes