Malicious PDF — malware analysis report

Static analysis result for SHA-256 3119664311442678…

MALICIOUS

PDF

226.1 KB Created: 2020-11-07 22:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e197d49137f1421ddbe1f114f4673f84 SHA-1: d8f5736668ff5537fe656bb17bb17f9cee06f38e SHA-256: 3119664311442678980fed4e25cae9b35e2974c9f331cf5a3f10a2a56376b632
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample is a PDF document flagged by ML classifiers as malicious. It employs several lures including urgency, fake invoices, MFA harvesting, and payment redirection, while impersonating the brand 'Target'. The embedded URL 'https://traffine.ru/aws?keyword=my+big+campus+pricing' and the link 'https://jilibawijoza.weebly.com/uploads/1/3/4/3/134363321/navotizojenisol.pdf' are suspicious and likely lead to credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 9

  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://jilibawijoza.weebly.com/uploads/1/3/4/3/134363321/navotizojenisol.pdf.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffine.ru/aws?keyword=my+big+campus+pricing PDF link annotation
    • https://jilibawijoza.weebly.com/uploads/1/3/4/3/134363321/navotizojenisol.pdfIn PDF document text
    • https://biduvokiket.weebly.com/uploads/1/3/4/3/134367510/513870.pdfIn PDF document text
    • https://patilufadan.weebly.com/uploads/1/3/4/4/134462925/tinojufoxozibenofur.pdfIn PDF document text
    • https://nopiroradonumiw.weebly.com/uploads/1/3/4/4/134401961/vokuluxitere.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28537974-041d-4fcd-9a2b-11edf40c6274/6217415351.pdfIn PDF document text
    • https://zixixesowaxa.files.wordpress.com/2020/11/jemufopupitudegodoxorum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a53b8de-b8fc-4fbf-90ea-f84f79651b80/protein_estimation_by_bradford_method_ppt.pdfIn PDF document text
    • https://didusajero.files.wordpress.com/2020/11/3742469563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9844342-e754-425f-a3cf-420b3a16dc0b/85933263354.pdfIn PDF document text
    • https://sijepafaji.files.wordpress.com/2020/11/addison_wesley_math_makes_sense_5_an.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35306833-17f2-47c9-8957-439a42afb4cd/10316581085.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acbd9c73-4841-4f6b-9988-1535a9d47c67/memojoboluliban.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66e364bf-a7f2-4978-8c94-9acfce118595/4146725363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3a2514-2801-40be-8155-6e940b7d9a40/dufife.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00033cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33CCA 5468 bytes
SHA-256: 95c825f68f47633d15bb198d23cd03a00c3bb164c4f60520ba3c463c1c99a7dd
font_01_sfnt_off00034f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34F66 13732 bytes
SHA-256: a30b13b2a59e829cf3c25fb84123b48bb62eb0336fd4e9b08300d9ad15723b0d