Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de4c8448c59f7c4…

MALICIOUS

PDF

83.8 KB Created: 2021-06-30 00:20:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e096178fbded6491202f53a584328b00 SHA-1: caa33de0ab7c260285205f814f926b263a851b9d SHA-256: 0de4c8448c59f7c4d79e14dd4671db65fd1bde42331a79938d4eb5d9aaa2f719
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a payment redirection lure. It contains numerous links to external PDFs hosted on compromised CMS upload storage and disposable hosting, suggesting an attempt to distribute further malicious content or phish for credentials. No scripts were extracted, but the overall pattern indicates a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/73ed1c1b52e2a4246f8827d48be6c078/fabavomasikuxelegibotaxev.pdf
    • http://bebelino.ru/userfiles/file/zupofiximakax.pdf
    • http://gw73patriots.com/clients/1/1e/1ed986c9d410becccfd9995a8318e329/File/10624789179.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160766dbcebd2b---44730862311.pdf
    • http://abpaluso.com/upload/file/vinukogosiwawopibupef.pdf
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/e9f8a56e40b04290884cd2fc537cf7a1/82666069608.pdf
    • http://anhuicrew.com/upload_fck/file/2021-5-2/20210502122530804674.pdf
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c85bd38ef8b---minela.pdf
    • http://tingyi-bnb.com/CKEdit/upload/files/sogibewirudarolipukos.pdf
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/7675340d96be3b00eac86985660e066f/51215514128.pdf
    • http://renovator.cz/files/file/56463756427.pdf
    • http://africanhairbraidingsalon.com/userfiles/file/85516006802.pdf
    • http://ersatzmonitor.de/userfiles/file/31212492821.pdf
    • http://wintec-samu.hu/uploads/files/20848466764.pdf
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/ab8ee178aba275a19bff970da3315c19/polakozugevajakogudegak.pdf
    • http://didocrosby.com/imagenes/file/4585458645.pdf
    • http://albino-pitti.com/pub_img/file/48627964210.pdf
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070b40869aaa---kukabumakubupubalisos.pdf
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c08dcca86df---1197832708.pdf
    • http://poorclarescork.ie/images/zerowefedikudizujaxar.pdf
    • http://appletechsolutions.com/userfiles/file/23696328346.pdf
    • http://biaikatolikus.hu/files/file/2892144628.pdf
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a284a97dcb9---69014361047.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=results+for+set+for+life+lotto
    • 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_off0000e7c8.bin
b2d21d90e648f9329454783a81377e2765e31e27811e9704d40411a8bea697df
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C8 10088 bytes
font_01_sfnt_off0000fe68.bin
16a8b080f33e1b90adf8905f9f5fe4a6cc6ca3b3881d0e8a164e71e59425d64c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE68 16840 bytes
font_02_sfnt_off000129ef.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x129EF 16792 bytes