Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6f6db45d7d46d0…

MALICIOUS

PDF

72.3 KB Created: 2020-12-06 09:34:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 814a1c72788df9f91ffbd08972c8cf4f SHA-1: 96f6ee862c4a967c8bd281e141c4ef6e137b792b SHA-256: 7e6f6db45d7d46d074aaafad5c9a090f8c788cdcde511b58519b71a8bc80e968
294 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including brand impersonation for credential phishing (Amazon) and redirection to known malicious infrastructure. The document body, though truncated, suggests a financial context ('Current assets balance sheet'), aligning with phishing lures. The presence of embedded URLs and the ClamAV detection further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://razebefalokugex.weebly.com/uploads/1/3/4/8/134895215/sopavamem_mumika_dunowi_saninu.pdf.
  • 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.
  • 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://gettraff.ru/aws?utm_term=current+assets+balance+sheet In PDF document text
    • https://razebefalokugex.weebly.com/uploads/1/3/4/8/134895215/sopavamem_mumika_dunowi_saninu.pdfIn PDF document text
    • https://madapupe.weebly.com/uploads/1/3/4/6/134667506/8581050.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8c7533c3cf6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf68679d79364840866bd6/1606379628037/13289271280.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5707e1c8c741314508ea2/t/5fcb66de0814be4f73e88ca7/1607165662894/rukarufowamotajos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c07a9d-2e99-4563-a224-d9b40e183796/introduction_to_the_theory_of_computation_3e_instructors_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdbe0d99-af39-4869-ab88-d9b92b45cf91/48640900916.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b305116eb00e3c6cd0a6/t/5fc64ee9a97599144ecfdd8d/1606831852257/icy_hot_ingredients.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe14606457125654022f95/1606292579746/eclipse_gum_target_market.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ffe7392-6410-4345-9147-26e2d9e2c106/oz_principle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0159158a-7125-4359-8b80-e7c898162bbc/how_to_find_the_residual_on_a_ti-84_plus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc708dbc2869f0c81c0ed97/t/5fcc27dfc836a917f9fd5b11/1607215071618/37979787615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1afdc258-77b8-4052-90e6-0471a9823f7b/golosux.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc042db8787e8798968ae67/t/5fc3fb0718e72e5fdb537f84/1606679305239/26517537943.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_off0000ddf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF3 4932 bytes
SHA-256: 701ec62a7bc0e0c763069cbcfacbe832faf9d0998cb21189ffa8a4971720044e
font_01_sfnt_off0000eea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA7 11212 bytes
SHA-256: be3b01ba67fc754cf55073e80713d6fa48a4b2c20f49614e5091d639b9f064c5